An enzyme found in tears called lysozyme has an average radius of 1.430 × 10⁻³ μm OR 1.43 E⁻⁸ decimeters (dm). is the radius in decimeters (dm).
What use does lysozyme serve?Animals generate the antibacterial enzyme lysozyme, which is a component of the innate immune system. A glycoside hydrolase is responsible for catalyzing the reaction.
What is the lysozyme's molecular weight?Lysozyme has a molar mass of 14,100 units. Its three-dimensional structure resembles that of immune system, -lactalbumin, and Lysozyme, an enzyme that can disintegrate some bacteria's exterior layer and which is also found in saliva and tears, is secreted by skin glands along with bacteria and skin.
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Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3. A fitting composed of common brass has a total volume of 129.5 cm3 .
How many atoms of copper does the fitting contain?
The alloy has a composition of 37 % zinc by mass and having a density of 8.48 g/cm. And a fitting composed of common brass has a total volume of 112.5 cm 3 ^3 3.
How many atoms of copper does the fitting contain?The number of atoms of zinc and copper should be 3.25 x 10^24 atoms and 5.70 x 10^24 atoms
Calculation of a number of atoms of copper and zinc:
Measure the mass of the alloy by multiplying the density and volume.
m = (8.48 g/cm³)(112.5 cm³) = 954 g
Now
The mass of zinc in this alloy is,
(954 g)(0.37) = 352.98 g
Now
mass of copper,
= 954 g - 352.98 g
= 601.02 g
Now
n (zinc) = 352.98 g / (65.38 g/mol) = 5.40 moles
n (copper) = 601.02 g / (63.55 g/mol) = 9.46 moles
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Please answer my question.
The molarity of solution is 8.61M. A material that may dissolve a solute is known as a solvent. moles per liter of a solution, is known as molar concentration or molarity.
What is molarity?The amount of mole of solute present in a certain number of liters of the solution, or moles per liter of a solution, is known as molar concentration or molarity.
Before we continue, let's clarify the differences between the phrases "solute," "solvent," and "solution" to make it simpler to comprehend the ideas that will follow. Solutes are simply substances that are found in solutions since a solution is defined as a homogenous mixture that comprises one or more solutes. A material that may dissolve a solute is known as a solvent.
Π= CRT
0.231=C×8.314×310
C=0.231/ 8.314×310
C=8.61M
Therefore, the molarity of solution is 8.61M.
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Differentiate acid reagent bottle and base reagent bottle
Reagent bottles must be closed when not in use because they may contain volatile or sublime substances.
What is reagent bottle?Reagent bottles are most commonly used to store chemical reagents, including acid and alkali solvents that can be safely stored due to anti-corrosion capabilities.
Reagent bottles, often known as graduated bottles, are glass, plastic, borosilicate, or related-substance containers with specific caps or stoppers. They are used in labs to store chemicals in liquid or powder form in cabinets or on shelves.
Some reagent bottles are tinted amber (actinic), brown or red to protect light-sensitive chemical compounds from visible light, ultraviolet and infrared radiation which may alter them; other bottles are tinted blue (cobalt glass) or uranium green for decorative purposes -mostly vintage apothecary sets.
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Each ionizable group of an amino acid can exist in one of two states, charged or neutral. The electric charge on the functional group is determined by the relationship between its pKa and the pH of the solution. This relationship is described by the Henderson-Hasselbalch equation.
(a) Histidine has three ionizable functional groups. Write the equilibrium equations for its three ionizations and assign the proper pKa
for each ionization. Draw the structure of histidine in each ionization state. What is the net charge on the histidine molecule in each ionization state?
(b) Draw the structures of the predominant ionization state of histidine at pH 1, 4, 8, and 12. Note that the ionization state can be approximated by treating each ionizable group independently.
(c) What is the net charge of histidine at pH 1, 4, 8, and 12? For each pH, will histidine migrate toward the anode (+) or cathode (−) when placed in an electric field?
a) The equilibrium equations for its three ionizations
are
Imidazole nitrogen ionization:Histidine (H) + H2O <-> Histidine-H^+ (H+) + OH^-
pKa = 6.0
2. Amino nitrogen ionization:
Histidine (H) + H2O <-> Histidine-H^+ (H2+) + OH^-
pKa = 8.0
3. Carboxyl carbon ionization:
Histidine (H) + H2O <-> Histidine-H^+ (COOH) + OH^-
pKa = 1.8
c) The net charge of histidine at pH 1, 4, 8, and 12
pH 1: +1
pH 4: 0
pH 8: +2
pH 12: +1
(a) Histidine has three ionizable functional groups: the imidazole nitrogen (pKa = 6.0), the amino nitrogen (pKa = 8.0), and the carboxyl carbon (pKa = 1.8). The equilibrium equations for each ionization are as follows:
Imidazole nitrogen ionization:Histidine (H) + H2O <-> Histidine-H^+ (H+) + OH^-
pKa = 6.0
2. Amino nitrogen ionization:
Histidine (H) + H2O <-> Histidine-H^+ (H2+) + OH^-
pKa = 8.0
3. Carboxyl carbon ionization:
Histidine (H) + H2O <-> Histidine-H^+ (COOH) + OH^-
pKa = 1.8
The structure of histidine in each ionization state is shown below:
Histidine (H):
H N
\ /
C=O
/ |
H N COOH
Histidine-H^+ (H+):
H N
\ /
C=O
/ |
H N COO^-
Histidine-H^+ (H2+):
H N
\ /
C=O
/ |
H2N COOH
Histidine-H^+ (COOH):
H N
\ /
C=O
/ |
H N COO^-
The net charge on the histidine molecule in each ionization state depends on the pH of the solution. At pH values close to the pKa of a particular ionization, the ionization state will be mostly in the charged form, and the net charge on the molecule will be positive. At pH values far from the pKa, the ionization state will be mostly neutral, and the net charge will be close to zero.
(b) The predominant ionization state of histidine at pH 1, 4, 8, and 12 is shown below:
pH 1: Histidine-H^+ (COOH)
pH 4: Histidine (H)
pH 8: Histidine-H^+ (H2+)
pH 12: Histidine-H^+ (H+)
pH 1:
H N
\ /
C=O
/ |
H N COO^-
pH 4:
H N
\ /
C=O
/ |
H N COOH
pH 8:
H N
\ /
C=O
/ |
H2N COOH
pH 12:
H N
\ /
C=O
/ |
H N COO^-
(c) The net charge of histidine at pH 1, 4, 8, and 12 is shown below:
pH 1: +1
pH 4: 0
pH 8: +2
pH 12: +1
At pH 1, histidine will migrate toward the cathode (-) as it has a positive charge. At pH 4, histidine will not migrate as it has a neutral charge. At pH
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Identify the true statements regarding disulfide bridges (disulfide bonds). Include all that apply. a. Disulfide bridges are important to primary and tertiary structure, not quaternary b. Disulfide bridges have a stabilizing effect on proteins c. A disulfide bridge forms between two cysteine residues. d. Disulfide bridges can exist between two amino acid residues on the same chain. e. Disulfide bridges are formed by an irreversible oxidation reaction.
The correct statement about disulfide bridges (disulfide bonds) is C. A disulfide bridge is formed between the two cysteine residues.
What is a disulfide bond?Disulfide bonds are mainly covalent bonds between side chain residues in the same protein or may be different proteins thus forming between 2 cysteine residues.
Apart from peptide bonds, disulfide bonds are a different type of covalent bond, present in protein molecules. This bond is formed due to the oxidation of sulfhydryl or thiol groups (SH groups) derived from cysteine residues (non-essential amino acids). The disulfide bond is designated as RSSR1 and is also known as the SS bond.
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Please answer my question.
The free energy of the system is 13.9 kJ/mol. Option D
What is the Gibbs free energy?Gibbs free energy, also known as Gibbs energy or simply free energy, is a thermodynamic property that combines enthalpy (heat content) and entropy (measure of disorder or randomness) to predict the feasibility of a chemical reaction.
It represents the maximum amount of work that can be obtained from a system at constant temperature and pressure. A negative Gibbs free energy value indicates that a reaction is spontaneous and can proceed without input of energy, while a positive value means energy must be added for the reaction to occur.
Now we know that;
ΔG = -RTlnK
R = gas constant
T = temperature
K = equilibrium constant
Then we have;
ΔG = -(8.314 * 298) ln(3.7 * 10^-3)
ΔG = 13.9 kJ/mol
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Give the oxidation number for each atom in the following reaction. Then identify the reducing/oxidizing agent, the reduced/oxidized species, and the electron donor/acceptor from the reactants.
3Sn2+(aq)+IO−4(aq)+8H+(aq)→3Sn4+(aq)+I−(aq)+4H2O(l)
The oxidation number in the reaction is: Sn₂⁺ = +2, Sn₄⁺ = +4, IO₄⁻ = +5. The reducing agent is Sn₂⁺, the oxidizing agent is IO₄⁻, the reduced species is Sn₂⁺, the oxidized species is IO₄⁻, the electron donor is Sn₂⁺, and the electron acceptor is IO₄⁻.
In this reaction, Sn₂⁺ is the reducing agent and IO₄⁻ is the oxidizing agent. The reducing agent (Sn₂⁺) donates electrons to the oxidizing agent (IO₄⁻), causing it to be reduced from +5 to -1 oxidation state.
The oxidizing agent gains the electrons, which causes it to become oxidized and its oxidation state increases. This reaction results in the transfer of electrons from the reducing agent to the oxidizing agent, with Sn₂⁺ losing electrons to become Sn₄⁺ and IO₄⁻ gaining electrons to become I⁻. The electron donor in the reaction is Sn₂⁺ and the electron acceptor is IO₄⁻. The reaction also results in the production of 4H₂O (water) and 8H⁺ (hydrogen ions).
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a property that can be observed or seen
A property that can be observed or seen is called as physical property.
What is a property that can be observed and measured?Physical properties are characteristics that can be observed without affecting the substance's identity. Shape, mass, color, volume, and texture are some examples. Melting point, boiling point, strength, hardness, and magnetism are all physical properties that can be measured.
A physical property is a characteristic of matter that can be observed or measured without causing it to change chemical composition. Color, molecular weight, and volume are examples of physical properties.
Thus, A physical property is a property of a substance that can be observed or measured without changing the identity of the substance.
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Give the IUPAC name of the following molecule:
Answer:
Methanol
Explanation:
The IUPAC name of the figure given above is methanol. It was bond of carbon and hydrogen elements.That chemical bond structure is named as methanol by IUPAC i.e international union of pure and applied chemistry.
An element is a substance made up of different kinds of atoms bonded together true or false
Answer:
it will be false ................
A 41.5 lb child has a Streptococcus infection. Amoxicillin is prescribed at a dosage of 45 mg per kg of body weight per day given b.i.d. How many milligrams of amoxicillin should be given at each administration?
Answer:
424.8 mg.
Explanation:
divide the weight in pounds by 2.2046 to get the weight in kilograms.
41.5 lb / 2.2046 = 18.88 kg
multiply the weight of the child in kg by the prescribed dose of 45 mg/kg per day.
18.88 kg * 45 mg/kg = 849.6 mg per day
Amoxicillin is prescribed to be given twice a day, so divide it by 2.
849.6 mg / 2 = 424.8 mg per administration
Therefore, Amoxicillin should be given to the child twice a day, and each administration should be 424.8 mg.
Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 C one mole of it takes up 22.4 L. How would you calculate the moles in 900. g of hydrogen gas? Set up the math. But DONT DO ANY OF IT. Just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.
The number of moles of hydrogen gas in 900 g can be calculated using the following formula:
Moles = (900 g)/(0.090 g/L * 22.4 L/mol) = 4.05 mol.To calculate the moles of a substance, you need to know the mass of the substance and the molar mass of the substance. The molar mass is the mass of one mole of the substance, and it is usually expressed in grams per mole (g/mol). To find the number of moles, you need to divide the mass of the substance, in grams, by the molar mass of the substance, in g/mol.
For example, if you have 900 g of hydrogen gas, with a molar mass of 2.02 g/mol, you can calculate the moles of hydrogen gas by dividing 900 g by 2.02 g/mol, which gives you 4.47 moles of hydrogen gas.
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Calculate the number of hydrogen atoms in a 70.0g sample of ammonia .
Answer: 52.69
Explanation:
Please help meeeeeeeeeeeeeeeeeee
How does intermolecular forces can influence how molecules arrange themselves
Although intermolecular forces are significantly weaker than intramolecular forces of attraction, they are still significant because they affect how molecules behave in terms of their melting and boiling points, densities, and enthalpies of fusion and vaporization.
What is intermolecular force?An intermolecular force is an attracting force that develops between the protons of one molecule and the electrons of another molecule's negative components. A substance's various physical and chemical properties are influenced by this force.
What is intramolecular force?Contrary to intermolecular forces, which are the forces that exist between molecules, intramolecular forces are any forces that hold the atoms of a molecule or compound together.
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Aqueous solutions of aluminum sulfate and lead (IV) acetate react. What mass, in kilograms, of aluminum sulfate are required to produce 35.85 kilograms of lead (IV) sulfate?
The mass of aluminum sulfate in kilograms is 35.85 kilograms.
How to calculate mass?To find the mass of aluminum sulfate required to produce 35.85 kilograms of lead (IV) sulfate, we need to balance the chemical equation for the reaction between aluminum sulfate and lead (IV) acetate:
Al₂(SO₄)₃ + 6 Pb(C₂H₃O₂)₄ → 3 Pb(SO₄)₂ + 2Al(C₂H₃O₂)₃
From this equation, we can see that 1 mole of aluminum sulfate reacts with 6 moles of lead (IV) acetate to produce 3 moles of lead (IV) sulfate. The molar mass of aluminum sulfate is 342.14 g/mol, so we can convert 35.85 kilograms of lead (IV) sulfate to moles and then find the equivalent amount of aluminum sulfate.
First, convert 35.85 kilograms of lead (IV) sulfate to grams: 35.85 kg x 1000 g/kg = 35,850 g
Next, find the number of moles of lead (IV) sulfate: 35,850 g / 247.2 g/mol = 144.9 moles
Since the ratio of moles of aluminum sulfate to moles of lead (IV) sulfate is 1:3, we need to divide the number of moles of lead (IV) sulfate by 3 to find the number of moles of aluminum sulfate: 144.9 moles / 3 = 48.3 moles
Finally, convert the number of moles of aluminum sulfate to grams and then to kilograms:
48.3 moles x 342.14 g/mol = 16,569.2 g
16,569.2 g / 1000 g/kg = 16.57 kg
So, 16.57 kilograms of aluminum sulfate are required to produce 35.85 kilograms of lead (IV) sulfate.
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the partial pressure of nitrogen in the atmosphere is 0.781atm. calculate the partial pressure in mmhg and torr. round each of your answers to 3 significant digits.
The partial pressure in mmHg and torr is 596.56 mmHg and 596.56 Torr.
The atmospheric pressure is the force per unit area exerted by the weight of the air. It is typically measured in units of the atmosphere (atm) or millimeters of mercury (mmHg).
In gases, each component (such as nitrogen, oxygen, etc.) has its own pressure within the mixture, known as its partial pressure. The total pressure of a mixture of gases is the sum of the partial pressures of each component.
The conversion factors from atm to mmHg and atm to Torr are:
1 atm = 760 mmHg
1 atm = 760 Torr
The partial pressure of nitrogen in the atmosphere is 0.781 atm, so the partial pressure in mmHg is:
0.781 atm * 760 mmHg/atm = 596.56 mmHg (rounded to 3 significant digits).
The partial pressure in Torr is:
0.781 atm * 760 Torr/atm = 596.56 Torr (rounded to 3 significant digits).
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A lead ball has a mass of 55.0 grams and a density of . What is the volume of the ball in L?
Then density of the lead ball weighing 55 g is 11.4 g/cm³.Then the volume of the ball is its mass divided by density equal to 4.82 cm³. Thus, volume in L is 0.004 L.
What is density ?Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed within a given volume. It is the ratio of mass to the volume.
Volume of an object is the space occupied by the object. For a rectangle block, volume is the product of length, width and height.
Given, M = 55 g
density =11.4 g/cm³
Volume = 55.0 g/11.4 g/ cm³
= 4.82 cm³
1 ml = 1 cm³.
Therefore, 4.82 cm³ = 4.82 ml
Then volume in L = 4.82 /1000 = 0.004 L
Therefore, the volume of the ball in L is 0.004 L.
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Your question is incomplete. The complete question probably was:
A lead ball has a mass of 55.0 grams and a density of 11.4 g/cm³. What is the volume of the ball in L?
A chemist must prepare 775.mL of 140.mM aqueous silver nitrate AgNO3 working solution. She'll do this by pouring out some 0.386M aqueous silver nitrate stock solution into a graduated cylinder and diluting it with distilled water.Calculate the volume in mL of the silver nitrate stock solution that the chemist should pour out. Round your answer to 3 significant digits.
The chemist should pour out 1763.28 mL of a 0.386 M aqueous silver nitrate stock solution. By rounding to three digits, the answer is 1763 mL.
Molarity (M) is defined as the number of moles of solute (n) divided by the volume (V) of the solution in liters. The molarity of a solution determines the concentration of the solution. This is very relevant in the chemist's process of making drugs.
The equation corresponding to molarity and volume is
M1×V1=M2×V2
To find V1,
V1=(M2×V2)/M1
Putting in the values,
(140 mM 775 mL) / 0.386 M = V1.
V1 = 1763.28 mL
As a result, the chemist should measure out 1763 mL of silver nitrate stock solution.
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Please help on this question for vapor pressure
The vapor pressure of the compound can be arranged in the order;
2 - Butanol1 - ButanolMethoxypropanePentaneWhat is the vapor pressure?Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its solid or liquid form. It is a measure of the tendency of a substance to evaporate and is dependent on temperature.
At a given temperature, a substance with a higher vapor pressure will evaporate more readily than a substance with a lower vapor pressure. The vapor pressure of a substance can be used to calculate its boiling point and other thermodynamic properties.
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2 Fe2O3 + 3 C 4 Fe + 3 CO2
Iron(III) oxide is reduced to iron by reacting with carbon. How many moles of carbon would you need if you need 2.4e+05 moles of iron to make the car?
How many moles of iron(III) oxide would you need?
The number of moles of iron(III) oxide would you need is 6 moles.
What are moles?Chemists employ the mole, a very significant unit of measurement.
In chemistry, the term ferric oxide is also used to represent the chemical compound iron (III) oxide. This is an inorganic chemical compound that is formed by the combination of two iron atoms, and three oxygen atoms.
So, the chemical formula of this compound is ferric oxide and its molar mass is equal to 159.69 grams per mole.
Therefore, the number of moles of iron(III) oxide would you need is 6 moles.
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A. The fossils in layer 1 is approximately 55 million years old.
B. The fossils in rock layer 4 is younger than the fossils in rock layer C. The fossils in rock layer 2 is younger than the fossils in rock layer d
D. The fossils in rock layer 5 is about the same age as the fossil in rock layer E
Answer:
C. The fossils in rock layer 2 is younger than the fossils in rock layer D
Explanation:
Given, North American rock layer 3 is the same age as European rock layer D
Also, we know that rock layer 2 is younger than those of D
So, fossils in rock layer 2 must also be younger than the fossils in rock layer D
A 1.98L balloon filled with gas is warmed from 242.5K to 306.6 K. What is the volume of the gas after it is heated?
Answer:
V2 = 2.485L
Explanation:
V1 = 1.98L
T1 = 242.5K
V2 = Final volume (What we're solving for)
T2 = 306.6K
V2 / T2 = V1 / T1
Where V1 is the initial volume, T1 is the initial temperature, V2 is the final volume and T2 is the final temperature.
So,
V2 = V1 * T2 / T1 ==> multiply both sides by T2 to isolate V2
V2 =
1.98L * 306.6K / 242.5K =
2.485 L
Hence, V2 = 2.485L
PLEASE HELP ME ITS AN EMERGENCY PLEASE HELP CHEM HONORS 10th GRADE GAS LAWS
The new volume of the gas is 62.2 L
What is the Charles's law?Charles's Law, also known as the Law of volumes, states that at a constant pressure, the volume of a gas is directly proportional to its absolute temperature. This means that as the temperature of a gas increases, its volume will also increase, and vice versa.
Mathematically, it can be expressed as: V/T = k, where V is the volume of the gas, T is its absolute temperature, and k is a constant.
We know that;
V1/T1 = V2/T2
V1T2 = V2T1
V2 = 60 * 313 /301.5
V2 = 62.2 L
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Using the reading "Fossil Fuels" from lesson 12 describe the environmental and economic benefits and drawbacks of fossil fuels. Second, looking over the benefits and drawbacks, in your opinion, what do you think will happen to mining of fossil fuels in the next 50 years?
Fossil fuels are essential part of the power generation in the world. They are easily combustible and more reliable and cheaper. However, the burning of fossil fuels releases toxic gases to the environment.
What are fossil fuels ?Fossil fuels are fuel generated from the decomposition materials. Petroleum, coal, natural gas etc. are fossil fuels which are excavating from the earth.
Fossil fuels are non-renewable sources of energy. Hence, as the existing fossil sources are exhausted no more fossil fuel can be made. It is cheaper, reliable and easy to use.
However, the toxic hydrocarbon gases released from the burning of fossil fuels make the environment polluted. Therefore, overuse of fossil fuel definitely rise the atmospheric pollution.
Its use over the next 50 years, will increase the global warming and more of it will be exhausted.
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1 The chloride ion concentration in a saturated
solution PbCh equals 0.072 mol/L .The
solubility product constant equals ?
In a saturated solution of lead chloride, PbCl2, there are 0.072 mol/L of chloride ions. 1.86 x is the solubility product constant.
A sparingly soluble solution is what?Sparingly soluble materials have a low degree of solubility. It is typically regarded as sparingly soluble if 1g of material dissolves in 30 to 100ml of solution. To put it another way, a substance is sparingly soluble if it can dissolve between 1 and 3g in 100ml of solute.
Which solution does the lead salts have a limited solubility in?There are numerous exceptions to lead salts' solubility, including: While the majority of sulfates are soluble in cold water, lead sulfate is not. Cold water does not dissolve lead chloride either, but hot water does.
Determination of the solubility product constant:PbCl2 dissociates into [tex]Pb^{2+}[/tex] + [tex]2Cl^{-}[/tex]
Ksp = [[tex]Pb^{2+}[/tex]] [[tex]Cl^{-}[/tex]]²
Ksp = [x] [2x]²
Ksp = 4x³
Ksp = 4 x (0.072 x [tex]10^{-3}[/tex])³
ksp = 1.86 x [tex]10^{-4}[/tex]
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The given question is incomplete. The complete question is:
The chloride ion concentration in a saturated solution PbCl2 equals 0.072 mol/L. The solubility product constant equals
A-1.86x 10^-4
B- 4.6 10^-4
C- 1.49 10^-3
D-5.1 * 10^-3
Which of the following pieces of information is NOT correct?
Mg(s) + CuSo4(aq) _____MgSo4(aq) + Cu (s)
Copper(II) sulfate and magnesium sulfate are both soluble in water
the reaction is exothermic.
the total energy content of the products is less than the total energy content of the reactants.
the temperature of the reaction decreases.
The piece of information that is not correct is that the temperature of the reaction decreases since the reaction is exothermic.
The correct option is D.
What are exothermic reactions?An exothermic reaction is one in which energy is given off as heat or light. In contrast to an endothermic process, which draws energy from its surroundings, an exothermic reaction transfers energy into the environment.
In an exothermic reaction, the total energy content of the products is less than the total energy content of the reactants.
The given reaction below is an example of an exothermic reaction:
Mg (s) + CuSO₄ (aq) ---> MgSO₄ (aq) + Cu (s)
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Active learning is the process of continually interacting with the material by reading the text, working problems, and attending lectures. Being an active learner means you are engaged with the material by asking questions and assessing your level of understanding as you read and study. Which of the following is NOT a study habit for successful learning?
Self-testing by working Sample Problems and Study Checks within the section
Forming a question from the title of the section you are going to read
Re-reading sections of the text or notes
Relating what you already know to new material by forming connections
Explanation:
Re-reading sections of the text or notes is a study habit, not one that is not a study habit for successful learning.
Consider the reaction: 2HBr(g)->H2(g)+Br2(g)
a) Express the rate of the reaction in terms of the change in concentration of each of the reactants and products.
b)In the first 25.0s of this reaction, the concentration of HBr dropped from 0.600M to 0.512M. Calculate the average rate of the reaction.
c)If the volume of the reactino vessel in part b was 1.50L, what amount of Br2(in moles) was formed during the first 15.0s of the reaciton?
a) The rate of the reaction in terms of the change in concentration of each of the reactants and products will be: -d[HBr]/dt or -d[Br2]/dt or d[H2]/dt
b) The average rate of the reaction will be 0.00352 M/s
c) = 0.0352 M amount of Br2(in moles) was formed during the first 15.0s of the reaciton.
a) The rate of a reaction can be expressed as the change in concentration of a reactant or product over time.
For this reaction, the rate could be expressed as:
-d[HBr]/dt or -d[Br2]/dt or d[H2]/dt
b) To calculate the average rate of the reaction, we can use the formula:
average rate = (change in concentration of HBr) / (change in time)
where the change in time is 25.0 s and the change in concentration of HBr is 0.600 M - 0.512 M = 0.088 M.
average rate = 0.088 M / 25.0 s
= 0.00352 M/s
c) To calculate the amount of Br2 formed during the first 15.0s of the reaction, we need to multiply the average rate of the reaction by the change in time:
amount of Br2 = average rate * change in time
amount of Br2 = 0.00352 M/s * 15.0 s = 0.0528 moles
Since the volume of the reaction vessel is 1.50 L, we can find the concentration of Br2:
[Br2] = amount of Br2 / volume
[Br2] = 0.0528 moles / 1.50 L
= 0.0352 M
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How might you the number of people to increase the sleigh's acceleration?
The number of people can be changed by reducing them in other to increase the sleigh's acceleration.
What is Acceleration?This is referred to as the rate at which velocity changes with time, in terms of both speed and direction and it is a vector quantity.
Fewer people would increase the sleigh's acceleration because more weight usually have a slower acceleration and light weight have a faster acceleration because of the high force which is needed to move the body thereby making it the correct choice.
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