A substance's density, energy, and intermolecular bonds between particles would be affected if it had to melt from a solid into a liquid.
The solid and liquid phases are in equilibrium at the melting point.
The chemical bonding and melting point of the substance are not affected by melting because it is a physical change (process) in which the same substance is present before and after.
Since atoms in solids are arranged farther apart, their density in liquids is often lower.
Atoms and molecules move more quickly in liquids due to their increased energy.
In liquids, intermolecular bonds are weaker.
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Can you put fruit on pewter?.
Yes, you can put fruit on a pewter plate to serve it, but fruits will look better and stay fresher if you cover the plate with green leaf lettuce first. Put the platter's ruffled edge on the outside.
And its Centre so that it points toward the Centre. Modern pewter is lead-free and safe to use. Tin makes up the majority of it, with small amounts of antimony and copper. on a single manufacturer. The products, which come with a lead-free guarantee, can be used with any kind of food or fruits. The majority of modern pewter's remaining components are an alloy of antimony and food-safe like fruits. Lead-free may occasionally include a little quantity of silver that is also acceptable to eat if you stay away from acidic dishes like those made with tomatoes, etc.
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what is the molarity of na in a solution of nacl whose salinity is 5.3 if the solution has a density of 1.03 g/ml ?
( 5.6 g / kg ) ( 1.03 kg / L ) ( 1 mol / 58.44 g ) = 0.0987 mol NaCl / L
Definition and examples of densityIts density is the amount of "stuff" that can be packed into a given amount of space. For instance, a slab of both the softer element lead (Pb) and the harder, denser component gold (Au) will simply be denser (Au). Bricks are more dense than Styrofoam blocks. Its definition is bulk per unit of volume.
Why is density important?Density is an important concept because it allows us to forecast which compounds will fly and those that will sink in a liquid. An object will frequently float as long as its density is less than that of the liquid.
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In a spectrophotometer, both absorbance and transmítanse indicate _____________ passing through a sample. A high absorbance corresponds to a _________ transmittance.
The amount of light, low
In a spectrophotometer, both absorbance and transmittance indicate the amount of light passing through a sample. A high absorbance corresponds to a low transmittance.
What does low transmittance mean?Similar to this, if the % transmittance number is low, it indicates that the surface absorbs more light. The transmittance for a substance that is completely transparent is 100%, and all light will flow through to the other side of the material.100% transmittance at the high end of the axis indicates that there was no absorption at that frequency. Lower transmittance percentages indicate that the compound is absorbing part of the energy, which causes downward spikes. The spikes in the IR spectrum are referred to as absorption bands.Low light intensity is present when analyzing a sample with high absorbance (low transmittance). Due to the unbalanced reference light and light intensity, the resulting spectrum has a high level of noise.Learn more about low transmittance refer to :
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the mechanism of enzymatic oxidation has been studied by isotopic labeling with the aid of deuterated derivatives of ethanol. specify the number of deuterium atoms that you would expect to find attached to the dihydropyridine ring of nadh following enzymatic oxidation of the alcohol given. deuteratedetoh the number of deuterium atoms attached to the dihydropyridine is .
No D is transferred to dihydro-pyridine and consequently, the number of D atoms transferred is zero (0).
The atom is the smallest piece of stuff that can be divided without producing charged particles. Additionally, it is the tiniest material with characteristics similar to chemical elements. As a result, the atom serves as the fundamental component of chemistry. Examine different electron arrangements in the electron shells that protect an atom's atomic nucleus. Examine different electron arrangements in the electron shells that protect an atom's atomic nucleus.
Space makes up the majority of an atom. The rest is made up of a negatively charged cloud of electrons surrounding a positively charged nucleus made up of protons and neutrons. In comparison to electrons, which are the lightest charged particles in the universe, the nucleus is small and dense.
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when the spectra used in this lab were obtained, your colleague had the followng chemicals and equipment: 300 mhz nmr nmr tubes test tubes di water disposable pipets solvents: chcl3, c6d12, and cdcl3 crc handbook (reference) use this information to answer questions 4 and 5. (4pts) 4. is there a solvent listed above that is inappropriate for nmr? explain.
To avoid spectra dominated by the solvent, most HNMR Spector are recorded in deuterated Solvent.
CHCL3 is replaced by CDCL3
H2O is replaced by D20
So,CHCL3 is inappropriate solvent for NMR
Chloroform, dimethyl sulfoxide, heavy water, and other deuterium solvents are often employed in NMR analysis. A substantial solvent signal that would normally appear in the proton NMR spectrum has been suppressed by using expensive deuterated solvents, which also makes locking and shimming easier. Deuterated Solvents are used in Nuclear Magnetic Resonance Spectroscopy for three major reasons: A: To prevent being swamped by the solvent signal. The 1H-NMR spectra of a typical proton-containing solvent exhibits a massive solvent absorption that dominates the spectrum and obstructs the peaks of interest proton. To prevent the overlapping of the big solvent peaks with the signal of the analytes, NMR samples are dissolved in deuterated solvents.
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gequal masses of water of 20 degrees c and 80 degrees c are mixed. what is the final temperature of the mixture (assuming no loss of energy from the system)? question 6 options: 40 degrees c 50 degrees c 60 degrees c 70 degrees c
The final temperature of the mixture will be 30⁰C
Since it is given that 50 gms of water at 20 ⁰ C and 50 gms of water at 40⁰ C are mixed. Since the masses of the liquid at different temperatures are the same, the answer is very easy and simple: average of 20⁰C and 40⁰C. that is 30⁰C.
the final temperature of the mixture =
= [ m1 * T1 + m2 * T2 ] / (m1 + m2)
= [ 50 gms * 20⁰ C + 50 gms * 40⁰C ] / (50+50)
= 3,000 / 100 = 30⁰C
In chemistry, we define the temperature of a substance as the average kinetic power of all of the atoms or molecules of that substance. No longer do all of the debris of a substance have identical kinetic strength. At any given time, the kinetic energy of the debris may be represented by means of a distribution.
Temperature performs a vital function in-hospital treatment (both humans and animals), food, beverages, and agriculture. Our average fitness is regularly reliant upon the temperature in lots of methods as nicely.
The SI unit of temperature as consistent with the global system of devices is Kelvin.
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where are sensory receptors sensitive to changes in o2 levels in the blood located
Answer:
Chemoreceptors in the carotid bodies and aortic arch are sensitive to modifications in arterial carbon dioxide, oxygen, and pH. The carotid our bodies are generally extra important in mediating this response and supply the primary mechanism by using which mammals sense lowered levels of oxygen.
The sensory receptors are sensitive to changes in O₂ levels in the blood, located in carotid bodies.
What are sensory receptors?An internal or external physical stimulation can cause a sensory receptor, a structure, to respond. It is a sensory nerve terminal that processes information after receiving it and sends nerve impulses to the brain for interpretation and perception.
Sensory neurons, central interneurons, and motor neurons make up a basic reflex arc. Receptors are used to sense the corresponding stimuli, and sensory neurons from receptors send this information to the spinal cord.
Motor neurons receive the signal after the spinal cord's interneurons have processed the incoming data. The spinal cord sends a signal to the effector organs, which are mostly muscles and glands, through the motor neuron.
Therefore, the sensory receptors, which are found in the carotid bodies, are sensitive to variations in blood oxygen levels.
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what evidence could have been collected to show quantitatively that water diffused into the dialysis bag?
Quantitative information would reflect the water potential by the change in percent in glucose and would include the final and initial cent amounts of the glucose.
What does a high glucose level mean?Because the body doesn't produce enough insulin, mellitus (high blood glucose) occurs when there is an excess of sugar in the blood. Hyperglycemia, a sign of diabetes, can lead to vomiting, intense hunger and thirst, a rapid heartbeat, eyesight issues, and other symptoms. Untreated hyperglycemia may lead to serious health problems.
What foods contain a lot of glucose?Sweet corn, honey, agave, molasses, pumpkin seeds, fruits, and fruit juices are a few examples of foods that are naturally abundant in pure glucose. These foods, especially fresh fruits, are nutritious when used in moderation as part of a balanced diet. Curries, foods, pies, and sweetened drinks are some examples of foods that frequently have had a significant amount of added glucose.
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Write equations th at show the processes that describe the first, second, and third ionization energies of an aluminum atom. Which process would require the least amount of energy?
By definition, the first, second, and third ionization energy are, respectively are:
Al(g)→ Al⁺(g) + 1 e⁻
Al⁺(g)→ Al⁺²(g) + 1 e⁻
Al⁺²(g)→ Al⁺³(g) + 1 e⁻
Electrons are held in atoms by their attraction to nucleus, which means that energy is needed to remove an electron from the atom.
Ionization energy, also called ionization potential, is necessary energy that must be supplied to a neutral, gaseous, ground-state atom to remove a electron from an atom. When a electron is removed from a neutral atom, the cation with a charge equal to +1 is formed.
So, in the given case, the first ionization energy is the energy required to remove valence electron(outermost) from a neutral atom is expressed as:
Al(g)→ Al⁺(g) + 1 e⁻
The second ionization energy represents energy required to start a second electron. Its value is always greater than first ionization energy because the volume of a positive ion is less than that of neutral atom and the electrostatic force is greater in the positive ion than in atom.
Then, in the given case, the second ionization energy is expressed as:
Al⁺(g)→ Al⁺²(g) + 1 e⁻
Finally, the third ionization energy represents energy necessary to start an electron from a positive ion and its value is always greater than that of the second ionization energy. This is because of the volume of the ion is smaller, and because of this, the electrostatic force is higher.
So, in the given case, the third ionization energy is expressed as:
Al⁺²(g)→ Al⁺³(g) + 1 e⁻
In summary, first, second, and third ionization energy are, respectively:
Al(g)→ Al⁺(g) + 1 e⁻
Al⁺(g)→ Al⁺²(g) + 1 e⁻
Al⁺²(g)→ Al⁺³(g) + 1 e⁻
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a closed container is filled with oxygen. the pressure in the container is 255 kpa . what is the pressure in millimeters of mercury?
The pressure of container filled with oxygen is 1,687.5 millimeter of mercury. As a result, pressure is sometimes expressed in terms of millimeters of mercury (mmHg) or centimeters of mercury (cmHg).
How much pressure is there in mercury?About 1012 bar was found to be Mercury's atmosphere's pressure (compared to the 1 bar atmospheric pressure at sea level on Earth).The height of the liquid is frequently used as a gauge of pressure because mercury, which is thick and has a low vapor pressure, is the liquid used in the majority of barometers. As a result, pressure is sometimes expressed in terms of millimeters of mercury (mmHg) or centimeters of mercury (cmHg).Explanation:
Given that,
Pressure = 225 Kpa
Pressure in millimeter of mercury = ?
Since, we know that,
1 Kpa = 7.5 millimeter of mercury
225 Kpa = 225 *7.5 millimeter of mercury
225 Kpa =1,687.5 millimeter of mercury.
The pressure of container filled with oxygen is 1,687.5 millimeter of mercury.
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If the ratio of flour to water in a bread recipe is 5:2, how much water would you have to add to 17. 5 cups of flour?.
For ratio 5:2, 17.5 cups of flour, the is to be add is 7 cups water.
Given, ratio is 5:2
Let, 5x = 17.5
x = 3.5
Then, 2x = 7
Hence, there is 7 cups of water to add.
A ratio is an ordered pair of numbers x and y, written x / y, where y does not equal 0. A proportion is an equation in which two ratios are set equal to each other.
For example, if there is 5 men and 3 women you could write the ratio as: 5 : 3 , for every 5 men there are 3 women.
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draw the lewis structure of diazomethane (ch2n2) that contains a formal charge on carbon and nitrogen. be sure to include all lone pairs of electrons and formal charges.
The valence electrons in a compound are seen in the resonance structure.
The number of valence electrons in a compound is represented by the Lewis structure of the chemical. The bonding in a molecule cannot always be explained by a single Lewis structure.
What is Lewis structure ?The diagrams known as Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.
The octet rule, which states that atoms share electrons so that each has eight in its outer shell, is the foundation of a Lewis structure. For instance, the outer shell of an oxygen atom has six electrons.
What is diazomethane ?German chemist Hans von Pechmann developed diazomethane in 1894, which is the chemical molecule CH2N2. The simplest diazo compound is this one. Since it is an explosive yellow gas in its pure state at ambient temperature, it is virtually often utilized as a solution in diethyl ether.
The carbon and nitrogen atoms in the molecule each have two double bonds and two single bonds. The Valence Shell Electron Pair Repulsion (VSEPR) theory is used to study the compound's molecular structure.
Resonance structures are a class of contributing structures that are used in certain circumstances. The graphic that is linked to this answer displays the resonance structures of diazomethane along with the formal charges on each atom.
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starvation would cause which of the following acid-base conditions? also, determine what type of compensation (metabolic or respiratory) there would be.A. respiratory acidosis with metabolic compensation B. respiratory alkalosis with metabolic compensationC. metabolic acidosis with respiratory compensation D. metabolic alkalosis with respiratory compensation
In the below acid-base conditions, starvation will cause severe alkalosis without respiratory correction.
What are the 4 types of respiratory?The helps in proper that make it up respiration are as follows: Pulmonary ventilation is the process of forcing air into and out of the lungs. External respiration is the process through which dioxide and oxygen are transferred from the lung to tissues. internal respiration, cellular gas exchange, and blood flow through systemic capillaries.
What is the main cause of respiratory?Respiratory diseases can be brought on by infections, smoking, exposure to smoke exposure, asbestos, radiation, and other forms of air pollution. Some of respiratory conditions include allergies, chronic obstructive pulmonary disease (COPD), respiratory failure, bronchitis, and lung cancer.
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Consider the reaction: 2HBr(g)H2(g) + Br2(l) Using standard thermodynamic data at 298K, calculate the entropy change for the surroundings when 2.44 moles of HBr(g) react at standard conditions. S°surroundings = _______ J/K. Please show all work neatly.
Entropy of surroundings is - 0.446 J/ K (S°surroundings)
What is entropy of surroundings?The mathematical derivation is complicated, but it leads to the formula ∆Ssurroundings = -∆H / T. This makes sense since the negative sign indicates that an exothermic process (H is negative, heat is sent out) increases the entropy of the surrounding environment.Most of the time, the environment will be at a consistent temperature. As a result, the entropy shift will simply be proportional to the quantity of energy that enters the surroundings in the form of heat divided by the ambient temperature.2HBr(g) [tex]\rightarrow[/tex] H2(g) + Br2(l)
[tex]2.44HBr(g) \rightarrow 1.22H_2(g) + 1.22 Br_2(l)[/tex]
ΔH= Bond energy data for formation of bond + bond energy data for dissociation of bond
[tex]\Delta H[/tex] =−2.44×368+1.22 x 435+1.22 x 192=−132.98 kJ.
(∆Ssurroundings) = –∆H / T. = −132.98 kJ/ 298K
(∆Ssurroundings) = - 0.446 J/ K
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How long does it take for glass to air dry?.
glasses usually take minutes to dry and cool for the glasses exposed to air.
In normal ambient air conditions, pint glasses can take up to 40 minutes to dry and cool. The Glass-increased Dry's air circulation reduces drying time to around 4 minutes, allowing for a much faster turnaround of glasses. While it's difficult to generalize how long it will take your laundry to air-dry—fabric type, air temperature, and the presence or absence of wind all play a role—on a pleasantly warm day with a light breeze, expect it to take two to four hours for most types of fabric.
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which of the following reactions is expected to produce 1-propanol (ch3ch2ch2oh) at a faster rate? explain
The reactions is expected to produce 1-propanol , CH₃CH₂CH₂OH at a faster rate is :
CH₃CH₂CH₂Cl + NaOH / DMSO ---> CH₃CH₂CH₂OH
The reaction is which expected to produce the propanol at a faster rate is given as the follows :
CH₃CH₂CH₂Cl + NaOH / DMSO ---> CH₃CH₂CH₂OH
Because the DMSO is a polar aprotic solvent. DMSO is dimethyl sulfoxide is a polar aprotic solvent that will dissolves the both the polar compounds and the non polar compounds.
Thus, the reaction of the propanol at a faster rate is recation of 1- chloro propane in DMSO because it is polar aprotic solvent.
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how many moles of potassium chloride are needed to prepare 0.750 l of a 1.50 m solution of kcl in water?
83.9 grams of KCl are needed to prepare 0.750 L of a 1.50 M solution in water.
KCl is the chemical formula of potassium chloride.
Given that,
Amount of moles of KCl (n) = ?
Volume of KCl solution (v) = 0.75L
Concentration of KCl solution (c) = 1.5M
Since concentration (c) is obtained by dividing the amount of solute dissolved by the volume of solvent, hence
c = n / v
make n the subject formula
n = c x v
n = 1.5M x 0.75L
n = 1.125 mole
Now given that,
Amount of moles of KCl (n) = 1.125
Mass of KCl in grams = ?
For molar mass of KCl, use the molar masses of:
Potassium, K = 39g;
Chlorine,Cl = 35.5g
KCl = (39g + 35.5g)
= 74.5g/mol
Since, amount of moles = mass in grams / molar mass
1.125 mole = m / 74.5g/mol
m = 1.125 mole x 74.5g/mole = 83.81g
Thus, 83.9 grams of KCl are needed to prepare 0.750 L of a 1.50 M solution in water
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Based on the reaction, identify the products. bef2 mg → mgf2 what type of reaction does this represent?
The product is MgF₂ and Be. In the formula BeF₂ + Mg => MgF₂ + Be, the products are MgF₂ and Be (on the right). This is a single displacement reaction.
Single displacement reaction is defined as a reaction in which a highly reactive element displaces a less reactive element from its chemical reaction.
There may be more or less reactants and products on each side separated by a plus sign +. Reactants are on the left and products are on the right.
In the formula BeF₂ + Mg => MgF₂ + Be, the products are MgF₂ (on the right) and Be.
All elements that appear on the left must also appear on the right, because the sum of reactants equals the sum of products. In the question on the left, the elements 'Be', 'F' and 'Mg' were displayed. The "Be" on the right was missing, so it must be a missing item.
This is a single replacement reaction because the element that was paired was replaced by another element.
All single shift reactions look like this:
AB + C = AC + B A paired element has been replaced by another unpaired element.
In this reaction, 'Be' was replaced. It was paired with 'F' to initiate the reaction, but was replaced by 'Mg'.
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How does the material of a shirt affect how long it takes to dry?.
Answer:
The material of shirt can affect the time of it drying as some materials can absorb more amount of water than other material due to which they can dry faster or slower.
Would Li lose or gain electrons?.
Answer:
As Lithium is the 3rd element in the periodic table and it's atomic number is 3.It loses 1 electron to complete duplet state.
This question is about halogens.
Bromine reacts with sodium to produce sodium bromide.
(a) Describe the structure of and bonding in sodium bromide.
There are two types of chemical compound one is covalent compound other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, NaBr is a ionic compound and has a crystalline structure.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Ionic compounds are formed by cation and anion. Sodium bromide is an ionic compound. Sodium is a metals so it act as cation as Na⁺ and Chlorine is a non metal so it act as anion as Br⁻. Both ions combine to form NaBr. sodium bromide has crystalline structure.
Therefore, NaBr is a ionic compound and has a crystalline structure.
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The measurement of ________ compares the density of urine to the density of water.
Specific gravity is a measure of the ratio of the density of the substance to the density of a reference substance, typically water for liquids.
The Significance of Measuring Specific Gravity in Urine SamplesThe measurement of specific gravity is a useful tool in determining the health of a urine sample. It is a measure of the ratio of the density of the urine to the density of water, which is used as a reference substance. If a sample has a high specific gravity, it means that the density of the urine is greater than the density of water, indicating the presence of substances, such as proteins and sugar, that are not normally found in urine.
High specific gravity readings may indicate dehydration, kidney problems, or urinary tract infections. Low specific gravity readings may indicate a variety of conditions, including diabetes mellitus, excessive fluid intake, or kidney failure.It is important for medical professionals to be aware of these readings and to interpret them in order to accurately diagnose and treat patients.
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Who uses MLA citation style?.
MLA citation styles are used by students and researchers in humanities fields such as languages, literature, and philosophy.
MLA Style sets up standards of composed communication concerning such formatting and page layout, applying elaborate details examples like abbreviations, quotations, and footnotes, then citing sources and preparing a manuscript for distribution in certain disciplines.MLA Style is the second most utilized quotation style after APA. It is typically saved for writers and students planning manuscripts in different humanities disciplines such as Language and Literature, Foreign Languages and Literature, and Literary Criticism. Using MLA Fashion legitimately makes it easier for readers to explore and comprehend a text through recognizable cues that allude to sources and borrowed data.
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a given temperature the vapor pressures of benezene and toluene are 183 mmhg and 59.2mmhg calculate the total vapor pressure over a solution of benzene and toluene with xbenezene
The total vapor pressure of the given solution of toluene and benzene has been 131.004 mm Hg.
What is Dalton's Law of vapour pressure?
According to Dalton's Law, a component's partial vapor pressure is determined by its mole fraction in the gas mixture and is equal to the total pressure times that component's pressure.
From Dalton's law of vapor pressure:
Total Vapor pressure = mole fraction of A \times× Vapor pressure of a + mole fraction of B \times× Vapor pressure of B.
Given, the mole fraction of Benzene = 0.580.
The sum of mole fractions in a solution has been 1.
1 = mole fraction of bemzene + mole fraction of toluene
1 = 0.580 + mole fraction of toluene
Mole fraction of toluene = 1 - 0.580
Mole fraction of toluene = 0.420
Total pressure = (0.580 \times× 183) + (0.420 \times× 59.2) mm Hg
Total pressure = 106.14 + 24.864 mm Hg
Total vapor pressure = 131.004 mm Hg.
Therefore, The total vapor pressure of the given solution of toluene and benzene has been 131.004 mm Hg.
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Calculate how many gram of the firt reactant are neceary to completely react with 17. 3 g of the econd reactant. The reaction being Na2Co3CuCl2=CuCo32NaCl
Chemistry's understanding of stoichiometry is crucial since it provides information on the yield of the reaction that is occurring.
The reaction Na2CO3 CaCl2 CaCO3 2nacl is what kind of reaction?We'll see a precipitation reaction in this lab (double replacement). When two soluble salts are combined, a reaction occurs that causes one product to precipitate while the other stays in solution. We will begin with known concentrations of calcium chloride and sodium carbonate.
Chemical Reaction Type: We have a double replacement reaction for this reaction. Balanced Approaches: This reaction involves two replacements, or displacements.
By combining solutions of calcium chloride and sodium carbonate to create the precipitate calcium carbonate, it is possible to make a straightforward example of how a precipitate is proof that a chemical reaction has occurred (CaCO3).
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How do you do double minus one?.
Add the bigger number twice or double it and then subtract 1 from it.
Doubles minus one is a strategy used to add two consecutive numbers. That is when two numbers are next to each other. Simply add the larger number twice, or double it and subtract 1 to get the final result. For example, here the consecutive numbers 7 and 8 are added using the double minus one strategy.
So the fact that the product of two negative numbers is positive is related to the fact that the reciprocal of a positive number return that positive number. Doubles Minus one is a strategy used to add two consecutive numbers. That is when two numbers are next to each other. Simply add the larger number twice or double it and subtract 1 to get the final result.
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when two hydrogen atoms pair together, they form a blank bond to achieve a complete blank, which is a stable configuration.target 1 of 8target 2 of 8 when two halogens pair together, they form a blank bond to achieve a complete blank, which is a stable configuration.target 3 of 8target 4 of 8 when two oxygen atoms pair together, they form a blank bond to achieve a complete blank, which is a stable configuration.target 5 of 8target 6 of 8 when two nitrogen atoms pair together, they form a blank bond to achieve a complete blank, which is a stable configuration.
The following element occurs as diatomic molecules by completing their octets.
What is octet?The octet rule is a chemical rule of thumb that reflects the theory that main- group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
When two hydrogen atom pair together, they form a single bond to complete their octet.H+H ⇒ H-H ⇒ H₂
When two halogen like fluorine, Fl (each with a valency of 7) atoms form a singe bond to achieve a complete octet which is stable. Each Fl atom will contribute 1 electron each to form a single bond.Fl+Fl ⇒ Fl-Fl ⇒ Fl₂
When two oxygen atoms pair together, a double bond is formed to achieve a complete octet which is a stable configuration.O+O ⇒ O=O ⇒ O₂
When two nitrogen atom, pair together, they form a triple bond between them to achieve a complete octet which is a stable configuration.N+N ⇒ N≡N ⇒ N₂
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For compounds ch3ch2ch2ch2ch3 and ch3ch2ch2ch2ch2ch3 , indicate the type of forces that are involved.
For compounds ch3ch2ch2ch2ch3 and ch3ch2ch2ch2ch2ch3 , van der Waals force is involved.
In gases, liquefied and solidified gases, and nearly all organic liquids and solids, neutral molecules are drawn to one another by van der Waals forces, which are relatively weak electric forces. The Dutch scientist Johannes Diderik van der Waals gave the forces their names.
The Polish-born scientist Fritz London was the first to identify the nature of this attractive force in molecules, which needs quantum mechanics to properly describe it. He linked it to electron transport within molecules. London emphasized that it was unlikely that the centers of positive and negative charge for atomic nuclei and electrons would ever coincide.
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what can you predict about the values of keq and the mass action ratio (q) that would result from these free energy changes?
The K eq Assuming T is298 K and R is 8.315 . 10-3 kJ/mol*K, the standard free energy for the reaction shown in the diagram is -3.5 kJ/mol. 4.10 is the value.
What is mass action ratio Q?Ratio of mass actions. When a reaction is complete (i.e., when t = ), this ratio—which is equal to the equilibrium constant—is the product of all the product concentrations divided by the product of all the reactant concentrations.According to the law of mass action, the equilibrium constant at a given constant temperature is equal to the product of the reactant concentrations divided by the product of the product of the product of the products increased to their respective stoichiometric coefficients.Assuming T = 298 K and R = 8.315 x 10-3 kJ/mol*K, the reaction's standard free energy is -3.5 kJ/mol.This number is 4.10To learn more about mass actions refer to:
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Rubidium is in group i of the periodic table and bromine is in group vii. Rubidium reacts with bromine to form an ionic compound. Which row shows the electron change taking place for rubidium and the correct formula of the rubidium ion?.
As according valence electrons or chemical characteristics, this third row, C, indicates the right electron change and ion equation of rubidium.
What is rubidium used for?Beyond the research, little is done using rubidium. It has been employed to manufacture specific types of glass, to clean oxygen traces out of vacuum tubes, and as a part of photocells. It was considered to be suitable for ion engines because it is easily ionized but then was found to be more effective than caesium.
Where is rubidium found?In the form of the oxide, rubidium can be found in traces up to 1% in add a touch of style, leucite, and zinnwaldite. About 1.5% of it can be found in lepidolite, and this source is where it is economically collected.
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