The number of buckets we need to separate these chemicals is 3.
Intermolecular force of the attraction is defined as the attraction by which two atoms or two molecules combine to form a molecule or matter. This force is basically attractive in nature. Intermolecular forces are the forces of attraction or repulsion which acts between neighboring particles. It acts between atom and ions also. The intermolecular force usually varies for solid, liquid and gaseous matter.
Here, C₂H₆ have London dispersion forces
CH₃F have Dipole-Dipole forces
CH₄ have London dispersion forces
NH₃ have hydrogen bonding
Hence, in order to separate these chemicals we need 3 buckets (different kinds of imf).
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Why do Americans allow companies to dump their electronic waste products in developing countries?
A recycling facility's running costs are increased by the U.S.'s stringent environmental and safety standards, which recyclers must follow.
Some recycling facilities have discovered that processing their hazardous e-waste offshore costs a lot less money than treating it domestically.
Despite having the knowledge and means to recycle e-waste safely and meticulously, the United States nevertheless exports some of its e-waste to underdeveloped nations due to the latter's access to cheap labor.
Hazardous elements can be found in several types of e-waste. By using risky processing methods like burning, crushing, or acid baths, toxins including lead, mercury, cadmium, and arsenic may leak into the ground or the atmosphere. This is where the problem's global scope starts. For wealthier nations, it is frequently less expensive to ship plastic garbage containers halfway across the world to be "recycled" in developing nations rather than deal with the rubbish themselves.
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In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (Li–F), 2.82 Å (Na-Cl), 3.30 Å (K–Br), and 3.67 Å (Rb–I), respectively.
1. Predict the cation–anion distance using the values of ionic radii given in Figure 7.7, on page 257 in the textbook.
2. Calculate the difference between the experimentally measured ion–ion distances and the ones predicted from Figure 7.7. Assuming we have an accuracy of 0.04 Å in the measurement, would you say that the two sets of ion–ion distances are the same or not? Why, or why not?
3. What estimates of the cation–anion distance would you obtain for these four compounds using bonding atomic radii? Are these estimates as accurate as the estimates using ionic radii? Explain your answer.
Please explain the part on the 4% accuracy.
The predicated cation anion distance for LiF, NaCL, KBr, RbI is 2.09Å, 2.83 Å, 3.34 Å, 3.72 Å respectively. The difference between the experimentally measured ion–ion distances and the ones predicted are 0.08 Å, 0.01 Å, 0.04 Å, 0.05 Å
The cation anion distance using the values of iconic radii are as follows:
i) LiF
the ionic radii of cation, Li⁺ = 0.90 Å
the ionic radii of anion, F⁻ = 1.19 Å
the predicated cation anion distance = 0.90Å + 1.19Å = 2.09Å,
ii) NaCl
the ionic radii of cation, Na⁺ = 1.16 Å
the ionic radii of anion, Cl⁻ = 1.67Å
the predicated cation anion distance = 1.16 Å + 1.67 Å = 2.83 Å,
iii) KBr
the ionic radii of cation, K⁺ = 1.52 Å
the ionic radii of anion, Br⁻ = 1.82 Å
the predicated cation anion distance = 1.52 Å + 1.82 Å = 3.34 Å,
iv) RbI
the ionic radii of cation, Rb⁺ = 1.66 Å
the ionic radii of anion, I⁻ = 2.06 Å
the predicated cation anion distance = 1.66 Å + 2.06 Å = 3.72 Å,
i)LiF:
Experimentally measured cation-anion distance = 2.01 Å,
predicted cation anion (LiF) distance = 2.09 Å
the difference = 2.09 Å - 2.01 Å = 0.08 Å
ii)NaCl
Experimentally measured cation-anion distance = 2.82 Å,
predicted cation anion (NaCL) distance = 2.83 Å
the difference = 2.83 Å - 2.82 Å = 0.01 Å
iii)KBr
Experimentally measured cation-anion distance = 3.30 Å,
predicted cation anion (KBr) distance = 3.34 Å
the difference = 3.34 Å - 3.30 Å = 0.04 Å
iv) RbI
Experimentally measured cation-anion distance = 3.67 Å,
predicted cation anion (RbI) distance = 3.72 Å
the difference = 3.72 Å - 3.67 Å = 0.05 Å
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if 20.00 g of a compound reacts completely with 30.00 g of another compound in a combination reaction, how many grams of product are formed?
In a compound reaction, 80 grams of the product are created when 20 grams of one substance completely react with 30 grams of another.
Assuming we have the balanced chemical equation for the reaction, we can use stoichiometry to determine the amount of product formed.
let's say the balanced chemical equation for the reaction between the two compounds is: A + B -> C
where A and B are the two compounds and C is the product.
We can use the coefficients in the balanced equation to determine the mole ratio of A to B to C.
Let's assume that the mole ratio of A to B to C is 1:2:3.
Let's assume that the molar mass of compound A is 40 g/mol and the molar mass of compound B is 60 g/mol. Using these values, we can calculate the number of moles of each compound as:
moles of A = 20.00 g / 40 g/mol = 0.50 mol
moles of B = 30.00 g / 60 g/mol = 0.50 mol
Since the mole ratio of A to B to C is 1:2:3, we can see that 0.50 moles of A react with 1.00 mole of B to produce 1.50 moles of C.
To convert the moles of C to grams, we can use the molar mass of C. Let's assume that the molar mass of C is 80 g/mol. Using this value, we can calculate the mass of C formed as:
mass of C = 1.50 mol x 80 g/mol = 120 g
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instruments scientist use in reference to atoms and what are some new advances that has bettered the environment?
In order to examine many details inside cells, an electron microscope can magnify objects by approximately 500,000 times. A variety of electron microscopes exist. Nanoparticles and atoms can be observed using a transmission electron microscope.
The quantum mechanical model, which draws on concepts from Schrödinger, Pauli, Heisenberg, and other thinkers, is the appropriate one for atoms. It takes a lot of various things into account. Theoretically sound, it is the most frequently accepted model. A more accurate depiction of the structure of atomic clusters, where surface atoms vibrate more intensely than inside atoms, has been revealed thanks to new technology created by physicists to examine atomic vibration in microscopic particles.
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what is the composition in at% ag of an alloy that consists of 90.6 wt% ag and the remaining wt% cu? supply an answer that is rounded to the nearest 0.1 at%.
The composition in at% Ag of the alloy is 85.2%.
To calculate the atomic percentage (at%) of Ag in the alloy,
we need to know the atomic weights of both Ag and Cu.
The atomic weight of Ag is 107.87 g/mol, while the atomic weight of Cu is 63.55 g/mol.
First, we can calculate the weight percentage of Cu in the alloy:
90.6 wt% Ag + x wt% Cu = 100 wt%
x wt% Cu = 100 wt% - 90.6 wt% Ag = 9.4 wt% Cu
Next, we can convert the weight percentage of Cu to the atomic percentage of Cu:
9.4 wt% Cu * (1 mol Cu/63.55 g) * ([tex]6.02\times10^{23 }[/tex]atoms/mol) = 8.36 x [tex]10^{22}[/tex] atoms Cu
100 wt% - 9.4 wt% = 90.6 wt% Ag
90.6 wt% Ag * (1 mol Ag/107.87 g) * (6.02 x [tex]10^{23}[/tex] atoms/mol) = 4.81 x [tex]10^{23}[/tex]atoms Ag
Now we can calculate the atomic percentage of Ag:
at% Ag = (4.81 x [tex]10^{23}[/tex] atoms Ag) / (4.81 x [tex]10^{23}[/tex] atoms Ag + 8.36 x [tex]10^{22}[/tex]atoms Cu) * 100%
at% Ag = 85.2%
Therefore, the composition in at% Ag of the alloy is 85.2%. Rounded to the nearest 0.1 at%, the answer is 85.2 at% Ag.
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Calculate the freezing point of a solution containing 1.25 g of benzene (78 g/mol) in 100 g of chloroform.
∆T = Km Kfp chloroform = 4.68 oC/m Freezing point chloroform = -63.5 oC
The freezing point of a solution is -63.575 °C
The freezing point depression of a solution can be calculated by using the equation:
∆T = Km • Kfp
Where ∆T is the freezing point depression of the solution, Km is the molar concentration of the solute and Kfp is the freezing point depression constant for the solvent.
For this problem, the molar concentration of the solute (benzene) is
[tex]\frac{ 1.25 g}{78 g/mol }\\\\= 0.0161 mol/kg.[/tex]
The freezing point depression constant for chloroform is 4.68 °C/m.
Therefore, the freezing point depression of the solution is:
∆T = 0.0161 mol/kg • 4.68 °C/m = 0.075 °C
The freezing point of the solution is then calculated by subtracting the freezing point depression from the freezing point of the pure solvent:
Freezing point of solution = -63.5 °C - 0.075 °C = -63.575 °C
Therefore , freezing point of a solution is -63.575 °C
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Which one of the following amino acids is MOST likely to participate in hydrogen bonding with water?
valine
alanine
leucine
asparagine
phenylalanine
Asparagine is the amino acid most likely to form a hydrogen bond with water (Asn).
The side chain of asparagine has an amide functional group (-CONH-), which can serve as both a hydrogen bond donor and acceptor. As a result, asparagine is more hydrophilic (loves water) than the other amino acids listed because it may interact with water molecules via hydrogen bonding. The amino acids valine (Val), leucine (Leu), and phenylalanine (Phe) are hydrophobic (averse to water) because they lack functional groups on their side chains that can form hydrogen bonds with water. The side chain of the amino acid alanine (Ala) has a methyl functional group (-CH3) that is hydrophobic and does not engage in hydrogen bonding. As a result, asparagine is the amino acid that has the highest likelihood of forming a hydrogen bond with water.
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Which of the following organic compounds is the main source of energy in living organisms?A. ProteinsB. LipidsC. CarbohydratesD. Amino Acids
The organic compounds is the main source of energy in living organisms is Lipids and Carbohydrates.
There are numerous biomolecules that live in nature. Food is veritably essential for life processes and that food should be nutritional as well. There are five factors of foods Carbohydrates, proteins, fats, vitamins, and minerals. These are veritably essential for the mortal body and insufficiency of any of the factors may lead to serious illness.
The organic composites which are the main source of energy in any living being are lipids and carbohydrates. Carbohydrates are nutrients that are used constantly and get converted into energy. Carbohydrates are used as short- term energy storehouse while lipids are used as long- term energy storehouse.
Lipids contain further energy per gram than carbohydrates, so that's why they're used for long- term storehouse.
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Why does each element have its own unique atomic line spectrum, when all atoms have energy levels labeled 1s,2s,2p,3s,etc.?
In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.
This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus. The term, atomic orbital, may also refer to the physical region or space where the electron can be calculated to be present, as defined by the particular mathematical form of the orbital.
Each orbital in an atom is characterized by a unique set of values of the three quantum numbers n, ℓ, and m, which respectively correspond to the electron's energy, angular momentum, and an angular momentum vector component (the magnetic quantum number). Each such orbital can be occupied by a maximum of two electrons, each with its own spin quantum number s. The simple names s orbital, p orbital, d orbital and f orbital refer to orbitals with angular momentum quantum number ℓ = 0, 1, 2 and 3respectively. These names, together with the value of n, are used to describe the electron configurations of atoms. They are derived from the description by early spectroscopists of certain series of alkali metal spectroscopic lines as sharp, principal, diffuse, and fundamental. Orbitals for ℓ > 3 continue alphabetically, omitting j (g, h, i, k, …) because some languages do not distinguish between the letters "i" and "j".
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PLease help its a chemistry Question (classifications of reactions) (I WILL MARK BRAINLIST!!) please see image attached below
thank you
The reaction that represents a chemical change in which a compound is broken down into two simpler compounds is reaction a.
What is a decomposition reaction?A decomposition reaction is a reaction in which a compound breaks down into two or more smaller compounds. It is opposed to a synthesis reaction in which two or more compounds combine to form a single compound.
Thus, for decomposition reactions: A ---> B + C
For synthesis reactions: A + B --> C
From reactions a to d shown in the illustration, only reaction a agrees with the features of a decomposition reaction.
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How would the diagram change if the substance was water instead of rock salt
The diagram would look similar, but instead of the salt molecules, there would be water molecules. The water molecules would form hydrogen bonds, which would give the structure of the diagram a different shape.
What is the water molecules?A water molecule is a molecule composed of two hydrogen atoms and one oxygen atom, connected by covalent bonds. Water is essential to all known forms of life and is the most abundant liquid on Earth. It is also the most abundant molecule in the human body, making up 55-60% of our total body weight. Water molecules are polar, with the oxygen atom having a slightly negative charge and the hydrogen atoms having a slightly positive charge. This polarity enables water molecules to form hydrogen bonds with each other, creating a strong network of hydrogen bonds within the liquid. This network of hydrogen bonds is what gives water many of its unique properties, such as its high surface tension, high boiling point, and high heat capacity.
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an unknown compound contains only c , h , and o . combustion of 5.90 g of this compound produced 13.4 g co2 and 5.49 g h2o . what is the empirical formula of the unknown compound? insert subscripts as needed.
The unidentified compound's empirical formula is C9.45H5.13O1 (rounded to the nearest whole number). The simplest whole number ratio of the atoms in a compound is the empirical formula.
We must ascertain the relative proportions of each element in the combination in order to get the empirical formula. the volume of CO2 generated: 13.4 g of CO2 are created per mass of C. mass of H = (mass of H2O created) (2 mol H2O / 1 mol H2) (1 g/mol) = 5.49 g 2 / 18.015 g/mol = 0.610 g. the compound's overall bulk 5.90 g, 13.4 g, 0.610 g, and 1.89 g are the mass of O, total mass, mass of C, and mass of H, respectively. figuring out the empirical formula Create moles out of the masses: 13.4 g divided by 12.011 g/mol yields 1.117 mol of carbon. 0.606 mol is equal to 0.610 g/1.008 g/mol, or moles of H. Omoles are calculated as 1.89 g / 15.999 g/mol, or 0.118 mol. the most basic ratio of entire numbers: moles of C, moles of H, and moles of O are equal to 1.117, 0.606, and 0.118 mol/moles, respectively. The abbreviation is: C9.45H5.13O1. Hence, C9.45H5.13O1 is the empirical formula for the unidentified molecule.
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not chem but anatomy. Which of the following is the chronological
order of events that occur when a person is
trying to keep their balance?
You retain balance when the weight and the reaction forces are balanced.
What chronological events helps a person to keep balance?Your question is incomplete but I think you want to know how a person can retain balance.
We know that we can only be keep balance when the forces that are acting on the person is balanced. The implication of it is that there are no unbalanced forces that are acting on the person.
The two forces that act on you when you stand are the weight and the reaction force. If these two forces are balanced then you can be able to retain your balance.
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Can you observe burning without actually changing the composition of the material?
Yes, it is possible to observe burning without actually changing the composition of the material. This can happen in cases where the heat generated by the burning process is not sufficient to cause chemical reactions that alter the composition of the material.
What is heat?
Heat is a form of energy that is transferred from one body to another as a result of a difference in temperature. Heat is related to the motion and energy of the particles that make up a substance. As heat is added to a substance, the energy of the particles increases, causing them to move more rapidly and increase the temperature of the substance.
For example, if a piece of paper is held near a flame, it may start to burn, producing heat and light, but the chemical composition of the paper remains unchanged. This is because the heat produced by the combustion reaction is not enough to cause the bonds in the paper to break and form new compounds. The paper is only undergoing physical changes such as charring or melting.
Another example is a wood fire that is not hot enough to cause complete combustion, which is the reaction of wood with oxygen to form carbon dioxide and water. In this case, the wood only undergoes partial combustion, producing heat and light, but its chemical composition remains unchanged.
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If an atom/ion has 3 protons, 4 neutrons and 4 electrons, is it a neutral atom or an ion? If it is an ion what is its charge?
The ion is a lithium ion with a charge of -1, often written as Li-.
What is an ion?
An ion is an atom or molecule that has a non-zero net electrical charge due to the loss or gain of one or more electrons. Ions can be positively charged (cations), when they lose electrons, or negatively charged (anions), when they gain electrons.
The number of protons in an atom/ion determines its atomic number and its identity.
In this case, the number of protons is 3, which corresponds to the element lithium (Li) in its neutral state. However, the number of electrons is 4, which means that this is an ion of lithium.
To determine the charge of the ion, we need to compare the number of protons (positive charges) to the number of electrons (negative charges). In this case, there are 3 protons (3+) and 4 electrons (4-), so the ion has a charge of -1.
Therefore, the ion is a lithium ion with a charge of -1, often written as Li-.
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Place in order the steps involved for flavors on the tongue to create a perception in the brain.-Chemical substances in food disolve in saliva.-Taste receptors are stimulated.-Signals are sent to the thalamus.-The frontal lobe perceives taste.
1. Chemical substances in food dissolve in saliva. 2. Taste receptors are stimulated. 3. Signals are sent to the thalamus. 4. The frontal lobe perceives taste.
What is substances ?Substances can be defined as materials or substances that are composed of one type of atom or molecule. They are made up of atoms and molecules that are combined together in a specific way and can be observed in the physical world. Substances can be either natural or man-made and can be either solid, liquid, or gas. They have a unique set of properties such as boiling point, melting point, and density, which helps to describe them.
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Which of Newton's laws can be expressed with the equation = mā?
A. Newton's first law
B. Newton's third law
C. Newton's law of universal gravitation
D. Newton's second law
SUBMIT
Answer:
D. Newton's second law
Explanation:
radium phosphate reacts with sulfuric acid to form radium sulfate and phosphoric acid. what is the coefficient for sulfuric acid when the equation is balanced using the lowest, whole-numbered coefficients?
After balancing the chemical equation, we have 4 sulfate groups on each side, so the equation is balanced. Therefore, the coefficient for sulfuric acid is 4.
The balanced chemical equation for the reaction between radium phosphate and sulfuric acid is:
Ra3(PO4)2 + 3 H2SO4 → 3 RaSO4 + 2 H3PO4
To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides. We can start by balancing the phosphorus (P) and sulfur (S) atoms, which appear only in one compound on each side. We can see that there are 2 P atoms and 8 O atoms on the left side, and 2 P atoms and 12 O atoms on the right side, so we need to add 4 H3PO4 on the left side to balance the P and O atoms. This gives us:
Ra3(PO4)2 + 3 H2SO4 → 3 RaSO4 + 4 H3PO4
Now we have to balance the hydrogen (H) and the sulfate (SO4) atoms. On the left side, we have 12 H atoms (from the 4 H3PO4) and 6 SO4 groups (from the 3 H2SO4), while on the right side we have 8 H atoms (from the 4 H3PO4) and 3 SO4 groups (from the 3 RaSO4). To balance the hydrogen atoms, we need to add 4 H2SO4 on the left side, which gives us:
Ra3(PO4)2 + 4 H2SO4 → 3 RaSO4 + 4 H3PO4
Now we have 4 sulfate groups on each side, so the equation is balanced. Therefore, the coefficient for sulfuric acid is 4.
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which experimental procedure(s) must scientists use to determine vmax and km of an enzymatic reaction using the michaelis-menten model? they must ensure that:
To determine the Vmax and Km of an enzymatic reaction using the Michaelis-Menten model, scientists must maintain constant enzyme and reaction times.
monitor the product concentration at different substrate concentrations, and use controls to ensure that observed changes are due to enzymatic activity
1. They only take into account the rate of the first reaction for each substrate concentration.
2. The first substrate concentrations tested are all significantly higher than the initial enzyme concentrations.
— The concentration of substrate at which 12Vmax occurs is Km.
Three underlying premises underlie the Michaelis-Menten equation:
The substrate concentration [S] during the reaction is constant according to the free ligand assumption.
2. The steady-state hypothesis postulates that the amount of ES remains constant during the reaction, allowing the rate of product creation to stay constant.
3. According to the irreversibility assumption, the reaction only moves in one direction and the product cannot be changed back into the substrate.
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is H2 a covalent compound?
Answer:
yes
Explanation:hydrogen two non-metals bonded together that makes a covalent or molecular compound
_____ is a disaccharide important in the formation of alcoholic beverages.
Maltose is a disaccharide important in the formation of alcoholic beverages.
Maltose:
Maltose, also known as maltobiose or maltose, is a disaccharide formed from two glucose units linked by α(1 → 4) bonds. In isomeric isomaltose, the two glucose molecules are linked by an α(1 → 6) bond. Maltose is both members of the amylose homologous family, which is the major structural motif in starch. When beta-amylase breaks down starch, it removes two units of glucose at a time to form maltose. An example of this reaction can be found in germinating seeds, which is why malt is named after it. Unlike sucrose, it is a reducing sugar.
Also known as malt sugar, it is made up of two glucose molecules bonded together. It is an important disaccharide in the formation of alcoholic beverages.
Alcoholic Beverage:
Alcoholic beverages (also called alcoholic beverages, adult beverages, or beverages) are beverages that contain ethanol, a type of alcohol that acts like a drug and is made by fermenting grains, fruits, or other sources of sugar. Drinking alcoholic beverages, often referred to as "drinking", plays an important social role in many cultures. Most countries have laws regulating the production, sale and consumption of alcoholic beverages.
Regulations may require the alcohol percentage (alcohol or proof) to be displayed and warning labels to be used. Alcoholic beverages are legal in most countries around the world, although in some countries such activities are outright banned. The global liquor industry passed $1 trillion in 2018.
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Answer:
Ethanol is a disaccharide important in the formation of alcoholic beverages. Ethanol is produced by yeast during fermentation when sugar is converted to alcohol. This process involves the breaking down of carbohydrates, such as glucose and fructose, into simple sugars, which are then converted into ethanol.
a chef plans to mix vinegar with italian dressing. the italian dressing contains vinegar. the chef wants to make milliliters of a mixture that contains vinegar. how much vinegar and how much italian dressing should she use?
chef should use 478.04 ml of Italian dressing and 21.96 ml of vinegar to make 500 ml of a mixture that contains 2% vinegar
To solve this , we need to use the concept of the concentration of the solution.
Let's assume that the concentration of vinegar in the Italian dressing is C1 and that the chef wants to make V milliliters of a mixture that contains vinegar.
Let's also assume that the concentration of vinegar in the final mixture is C2.
To find out how much vinegar and Italian dressing the chef should use, we can use the following formula:
C1V1 + C2V2 = C2V
where V1 is the volume of the Italian dressing that the chef should use, and V2 is the volume of vinegar that the chef should use.
We know that the concentration of vinegar in the Italian dressing is C1, so the concentration of the other ingredients in the Italian dressing is 1 - C1.
Let's assume that the chef wants to use x milliliters of Italian dressing and y milliliters of vinegar.Using the formula above, we can set up the following equation:
C1 * x + 1 * y = C2 * V
x + y = V
We have two equations and two unknowns, so we can solve for x and y.
y = (C2 - C1) * V / (1 - C1)
x = V - y
Substituting the values of C1, C2, and V, we get:
y = (0.05 - 0.02) * 500 / (1 - 0.02) = 21.96 ml
x = 500 - 21.96 = 478.04 ml
Therefore, the chef should use 478.04 ml of Italian dressing and 21.96 ml of vinegar to make 500 ml of a mixture that contains 2% vinegar.
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Lithium reacts spontaneously with bromine to produce lithium bromide. How many moles of Br2 are needed to make 7. 5 moles LiBr?
7. 5 moles of Br2 are needed to make 7. 5 moles LiBr.
There are two moles of bromine atoms for every mole of lithium bromide, so 7.5 moles of LiBr would require 15 moles of Br2. This is because the chemical equation for the reaction between lithium and bromine is:
The equation for the reaction is:
2Li + Br2 → 2LiBr
In order to make 7.5 moles of LiBr, we need 15 moles of Br2. This is because the ratio of Li to Br2 is Since the ratio is 1:1, we can use the following equation:
[tex]7.5 moles LiBr *\frac{ 1 mol Br2}{1 mol LiBr}= 7.5 moles Br2[/tex]
Therefore, 7.5 moles of Br2 are needed to make 7.5 moles of LiBr.
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Select the gas with the highest average kinetic energy per mole at 298 K.a. carbon dioxideb. all have the same kinetic energyc. hydrogend. watere. oxygen
The gas with the highest average kinetic energy per mole at 298 K are Carbon dioxide, Hydrogen, water and Oxygen. Hence, option B is correct answer.
The relationship between a gas's temperature and molar kinetic energy is proportional, and the proportionality constant is 32 times the gas constant R. The connection between molar kinetic energy and temperature is seen in the video below below. Half of each gas molecule's mass and the square of its RMS speed are multiplied to create the average kinetic energy of a gas molecule. In terms of math, it looks like this: M stands for mass.
The RMS velocity is vrms. It is determined by multiplying your total energy consumption (in kilowatt-hours) by your maximum electrical use (in kilowatts), then dividing the result by the number of days in the month and the sum of the daily hours. The outcome is a ratio between 0 and 1.06.
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which best describes the pka of a weak acid? choose one: a. pka values change over the course of a titration. b. the pka value depends on the concentration of the molecule present. c. the pka value depends on the ph. d. the pka is an intrinsic property of a molecule in question and depends on how tightly bound the acidic h is.
For a weak acid, the [tex]pk_a[/tex] value is an intrinsic property of the molecule and depends on how tightly bound the [tex][H^+][/tex] is.
In chemistry, an intrinsic property is a property of a substance that is independent of the amount of the substance present. Such properties are mainly dependent on chemical composition and structure.
The [tex]pk_a[/tex] value is the negative base 10 logarithm of the acid dissociation constant ([tex]k_a[/tex]) of a solution.
[tex]pk_a=-log_{10}(k_a)[/tex].
As the acid dissociation constant ([tex]k_a[/tex]) of a solution is an intrinsic property, hence the [tex]pk_a[/tex] value is also an intrinsic property.
The acid dissociation constant ([tex]k_a[/tex]) of a solution depends on the fact that if the acidic hydrogen [tex][H^+][/tex] is tightly bounded, then the value of [tex]k_a[/tex] will be decreased, which leads to the increase in the value of [tex]pk_a[/tex].
Hence, for a weak acid, the [tex]pk_a[/tex] value is an intrinsic property of the molecule and depends on how tightly bound the [tex][H^+][/tex] is.
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7. how many total moles of atp would be made (by both substrate-level phosphorylation and reduced cofactors) if 16 moles of glucose are oxidized by glycolysis and subsequently by the citric acid cycle? (1 mol nadh : 2.5 mol atp and 1 mol fadh2 : 1.5 mol atp) a) 412 moles d) 512 moles b) 160 moles e) 612 moles c) 192 moles
The final product would be 512 moles.
The outcome from one glucose throughout the state of glycol shall correspond to that of a T P to N A ph, that will become equivalent to two in addition to twice times 2.5, or in simpler words 7 18 p. Therefore, fro each one the following 16 moles, if 780 be multiplied by 16, it will amount to 1 12 http.
Consequently, each mole of glucose would be transformed into N A D P H via the process of oxidation, while the ATP seems to be the sum of two times 2.5 which is equivalent to five. Also, for calculating for 16 more, it would be 5 times 16 resulting in 80. Eventually, a total of 6 and a th, two FATH 2 and a TPS, within the cycle of citric acid for a mole glucose byproduct. So, the final sum will be 20 multiplied by 16, which will result in 320 http. Hence, adding them all together, the ultimate total will be 512 80 p.
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borneol can also be oxidized to camphor using other oxidizing agents, such as sodium dichromate in acid. write a balanced equation for this oxidation (cr2o72- is reduced to cr3 ).
The oxidation of borneol to camphor using sodium dichromate in acid can be represented by the following balanced equation:
C10H18O + Na2Cr2O7 + 4H2SO4 → C10H16O + Cr2(SO4)3 + Na2SO4 + 4H2O
In this reaction, the sodium dichromate (Na2Cr2O7) is reduced to chromium(III) sulfate (Cr2(SO4)3), while the borneol (C10H18O) is oxidized to camphor (C10H16O) and sulfuric acid (H2SO4) is used as the acid catalyst. The reaction also produces sodium sulfate (Na2SO4) and water (H2O) as byproducts.
A balanced equation is a representation of a chemical reaction that shows the number of atoms of each element present in the reactants and products. A balanced equation follows the law of conservation of mass, which states that mass cannot be created or destroyed in a chemical reaction.
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Calculate the [H3O+] for 0.0087 M H2SO4
Answer in units of M
0.0174 M is the calculated [H₃O+] for 0.0087 M H₂SO₄. Molarity is an important concept in chemistry.
What is molarity?Molarity, which is defined as the number of moles of solute dissolved per liter of solution, is a measure of a solution's concentration. It is often written with the symbol "M" and is measured in moles per liter (mol/L) units.
The molarity of a solution is determined by dividing the volume of the solution in liters by the number of moles of the solute present in that volume. because it allows us to quantify the amount of substance present in a solution. It is frequently used in stoichiometric calculations to determine the amounts of a chemical reaction's reactant and product that should be known. For instance, if a solution contains 2 moles of solute dissolved in 1 liter of solution, the molarity of the solution is 2 mol/L.
Because it fully dissociates in water, H₂SO₄ is a powerful acid that produces two H+ ions for every molecule that dissociates. As a result, the [H₃O+] in a solution of 0.0087 M H₂SO₄ is twice as molten as the H₂SO₄ solution: [H₃O+] = 2 x [H+] = 2 x 0.0087 M = 0.0174 M.
Accordingly, the [H₃O+] of a H₂SO₄ solution containing 0.0087 M is 0.0174 M.
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Question 8 When a reaction is properly refluxing, where should you see the vapors from the heated mixture? O Vapors should be about 1/3 up the condenser height. No visible vapors should be formed. O Vapors should be escaping from the top of the condenser. Vapors should be contained to the reaction flask.
When a reaction is properly refluxing, vapors from the heated mixture should be Vapors should be escaping from the top of the condenser about 1/3 up the condenser height.
When a reaction is being refluxed, vapor should escape from the top of the condenser. It should be visible, rising approximately one-third of the way up the condenser. It is important to ensure that the vapor is contained within the reaction flask and that no visible vapors are formed outside of the flask.
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Given the balanced equation:
2Al(s) + 6H+ (aq) -----> 2Al^3+ (aq) + 3H2(g)
What is the total number of moles of electrons gained by H+ (aq) when 2 moles of Al(s) are completely reacted?
1) 6
2) 2
3) 3
4) 12
The total number of moles of electrons transferred from Al to H⁺ is 6
The given reaction can be split up into two half-reactions as follows:
2 Al (s) → 2 Al³⁺ (aq) + 6 e⁻
6 H⁺ (aq) + 6 e⁻ → 3 H₂ (g)
From the first half-reaction, it is clear that 2 moles of Al give out 6 moles of electrons to become Al³⁺.
From the second half reaction, it is clear that these 6 moles of electrons are accepted by H⁺ to become H₂ gas.
What is a half-reaction?
A half reaction is either the oxidation or reduction reaction component of a redox reaction. A half reaction is obtained by considering the change in oxidation states of individual substances involved in the redox reaction
How does half-reaction work?
In general, the half-reactions are first balanced by atoms separately. Electrons are included in the half-reactions. These are then balanced so that the number of electrons lost is equal to the number of electrons gained. Finally, the two half-reactions are added back together.
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Answer:
3
Explanation:
because i did this when i was a kid
