Please help with 1, 2, 3, 4 & 5
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Homework Answers
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For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k k and not on the reactant concentration. It is expressed as t1/2=0.693k t 1 / 2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0. A certain first-order reaction (A→products A → p r o d u c t s ) has a rate constant of 9.30×10−3...
This wuestion has parts to it. I will rate. 1. 2. 3. 4. If a reaction...
This wuestion has parts to it. I will rate.
1.
2.
3.
4.
If a reaction is zero-order in a reactant, when the concentration of the reactant is decreased by a factor of 2, the reaction rate will: 。Adecrease by a factor of 1/2· 0 B. remain constant. C. double. O D. quadruple. OE. decrease by a factor of 1/4 You are working with a nonallosteric enzyme that displays Michaelis-Menten kinetics. At what percent of the maximum velocity wll the...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t 1/2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t 1/2 = 1 k[A ] 0 Part A A certain first-order reaction ( A→products ) has a rate constant of 9.90×10−3 s −1 at 45 ∘...
Please help with 1, 2, 3, 4 & 5 1. 2. 3. 4. 5. Classify the...
Please help with 1, 2, 3, 4 & 5
1.
2.
3.
4.
5.
Classify the following compounds as weak acids (W) or strong acids (S): hypochlorous acid perchloric acid chloric acid WSS OSSS Sww Owww OWs W A 25.0 mL sample of 0.723 M HClO 4 is titrated with a 0.273 M KOH solution. The H 30 concentration after the addition of 10.0 mL of KOH is М. O 0.440 O 1.00 x 10-7 0.723 O 2.81 x 10-13...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
Please I need help with questions number #3 , #4 , and #5 Rate of Reaction...
Please I need help with questions number
#3 , #4
, and #5
Rate of Reaction Prelaboratory Assignment 1. In a graph of the concentration of a reactant vs. time, what parameter gives the rate? 2. Write Beer's Law as an equation. Show how absorbance can be used to monitor concentration. A rate equation could be written as (Ac/At)--k [c]". Define (name) the following as they pertain to the rate equation: a) (Ac/At) b) k c) [c] 4. Assume n...
1. The rate constant for a certain reaction is k = 7.10×10−3 s−1 . If the...
1. The rate constant for a certain reaction is k = 7.10×10−3 s−1 . If the initial reactant concentration was 0.350 mol L−1, what will the concentration be after 19.0 minutes? 2. A zero-order reaction has a constant rate of 3.70×10−4 mol L−1 s−1. If after 40.0 seconds the concentration has dropped to 9.00×10−2 mol L−1, what was the initial concentration?
Question 3 (Mandatory) (5 points) The rate constant of a first-order decomposition reaction is 0.0147 s....
Question 3 (Mandatory) (5 points) The rate constant of a first-order decomposition reaction is 0.0147 s. If the initial concentration of reactant is 0.178 M, what is the concentration of reactant after 30.0 seconds? a) 8.72 x 10 M Ob) 0.0785 M Oc) 0,115 M O d) 0.643 M e) 0.0645 M Question 4 (Mandatory) (5 points) The reaction quotient, . for a system is 1.6 x 104. If the equilibrium constant for the system at some temperature 8.5 x...
due ASAP . please help 1. 2. 3. Cell potentials for the following species were measured...
due
ASAP . please help
1.
2.
3.
Cell potentials for the following species were measured using the Standard Hydrogen Electrode (SHE) at 25 °C: Reaction 12(aq) + 2e 21- (aq) Eºcell E = + 0.535 V Calculate the standard free energy (AG) in kJ for the 12/I– half reaction. Report your answer in kJ to three significant digits with no units -- only the number. Enter your answer here Which statement is true for an elementary reaction at equilibrium?...
The rate constant for a certain reaction is k = 1.70×10−3 s−1 . If the initial...
The rate constant for a certain reaction is k = 1.70×10−3 s−1 . If the initial reactant concentration was 0.900 M, what will the concentration be after 6.00 minutes? [A]t= B) A zero-order reaction has a constant rate of 3.90×10−4 M/s. If after 65.0 seconds the concentration has dropped to 4.00×10−2 M, what was the initial concentration? [A]0=
This wuestion has parts to it. I will rate.
1.
2.
3.
4.
If a reaction is zero-order in a reactant, when the concentration of the reactant is decreased by a factor of 2, the reaction rate will: 。Adecrease by a factor of 1/2· 0 B. remain constant. C. double. O D. quadruple. OE. decrease by a factor of 1/4 You are working with a nonallosteric enzyme that displays Michaelis-Menten kinetics. At what percent of the maximum velocity wll the...
Please help with 1, 2, 3, 4 & 5
1.
2.
3.
4.
5.
Classify the following compounds as weak acids (W) or strong acids (S): hypochlorous acid perchloric acid chloric acid WSS OSSS Sww Owww OWs W A 25.0 mL sample of 0.723 M HClO 4 is titrated with a 0.273 M KOH solution. The H 30 concentration after the addition of 10.0 mL of KOH is М. O 0.440 O 1.00 x 10-7 0.723 O 2.81 x 10-13...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
Please I need help with questions number
#3 , #4
, and #5
Rate of Reaction Prelaboratory Assignment 1. In a graph of the concentration of a reactant vs. time, what parameter gives the rate? 2. Write Beer's Law as an equation. Show how absorbance can be used to monitor concentration. A rate equation could be written as (Ac/At)--k [c]". Define (name) the following as they pertain to the rate equation: a) (Ac/At) b) k c) [c] 4. Assume n...
Question 3 (Mandatory) (5 points) The rate constant of a first-order decomposition reaction is 0.0147 s. If the initial concentration of reactant is 0.178 M, what is the concentration of reactant after 30.0 seconds? a) 8.72 x 10 M Ob) 0.0785 M Oc) 0,115 M O d) 0.643 M e) 0.0645 M Question 4 (Mandatory) (5 points) The reaction quotient, . for a system is 1.6 x 104. If the equilibrium constant for the system at some temperature 8.5 x...
due
ASAP . please help
1.
2.
3.
Cell potentials for the following species were measured using the Standard Hydrogen Electrode (SHE) at 25 °C: Reaction 12(aq) + 2e 21- (aq) Eºcell E = + 0.535 V Calculate the standard free energy (AG) in kJ for the 12/I– half reaction. Report your answer in kJ to three significant digits with no units -- only the number. Enter your answer here Which statement is true for an elementary reaction at equilibrium?...
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