Question
In: Chemistry
The enzyme urease catalyzes the reaction of urea, (NH2CONH2), with water to produce carbon dioxide and...
The enzyme urease catalyzes the reaction of urea, (NH2CONH2), with water to produce carbon dioxide and ammonia. In water, without the enzyme, the reaction proceeds with a first-order rate constant of 4.15 ×10−5s−1 at 100 ∘C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 3.4 ×104s−1 at 21 ∘C
1.If the rate of the catalyzed reaction were the same at 100 ∘C as it is at 21 ∘C, what would be the difference in the activation energy between the catalyzed and uncatalyzed reactions? Express your answer using two significant figures.
2.
In actuality, what would you expect for the rate of the catalyzed reaction at 100 ∘C as compared to that at 21 ∘C?
In actuality, what would you expect for the rate of the catalyzed reaction at 100 as compared to that at 21 ?
| The rate of the catalyzed reaction will be significantly lower at 100 ∘C than at 21 ∘C. | |
| The rate of the catalyzed reaction will be significantly greater at 100 ∘C than at 21 ∘C. | |
| The rate of the catalyzed reaction will be at 100 ∘C will be nearly equal to the rate at 21 ∘C. |
Solutions
queen_honey_blossom answered 2 hours agoRelated Solutions
Carbonic anhydrase is an enzyme that catalyzes the interconversion of carbon dioxide and water to bicarbonate...
Carbonic anhydrase is an enzyme that catalyzes the
interconversion of carbon dioxide and water to bicarbonate and a
proton:
CO2 + H2O ? HCO3- + H+
This enzyme is necessary for the reaction shown above to occur
rapidly enough for normal kidney function. Which of the following
might you expect to occur if we inhibited the carbonic anhydrase
present in renal tubular cells?
increased excretion of protons into the lumen of the renal
tubule
respiratory alkalosis
metabolic acidosis
The reaction of glucose, C6H12O6, to carbon dioxide and water is a common reaction in the...
The reaction of glucose, C6H12O6, to carbon dioxide and water is
a common reaction in the body. C6H12O6 (s) + _6__ O2 (g) → __6__
CO2 (g) + __6__ H2O (g)
If you eat 15.0 g of glucose from some candy you eat, how many
grams of carbon dioxide will you produce?
If the density of water at body temperature (37 ⁰C) is 0.9933
g/mL, how many mL of water is produced from this reaction?
Urea (NH2)2CO is prepared by reactign ammonia with carbon dioxide. The byproduct is water. 637.2g of...
Urea (NH2)2CO is prepared by reactign
ammonia with carbon dioxide. The byproduct is water. 637.2g of
ammonia are reacted with 787.3g of carbon dioxide.
A) write a balanced equation
B) Determine which of the reactants (ammonia or carbon dioxide)
is a limiting reactant. Show calculations to support your
choice
C) Which of the two reactants should you use to calculate the
theoretical yield (=the maximum amount possible) of urea. Explain
why
Consider the formation of glucose from carbon dioxide and water (i.e., the reaction of the photosynthetic...
Consider the formation of glucose from carbon dioxide and water
(i.e., the reaction of the photosynthetic process):
6CO2(g)+6H2O(l)→C6H12O6(s)+6O2(g)
.
The following table of information will be useful in working this
problem:
T= 298 K
CO2(g)
H2O(l)
C6H12O6(s)
O2(g)
ΔH∘f (kJ mol−1)
-393.5
-285.8
-1273.1
0.0
S∘ (J mol−1 K−1)
213.8
70.0
209.2
205.2
C∘P,m (J mol−1 K−1)
37.1
75.3
219.2
29.4
Calculate the entropy change for this chemical system at
T = 298 K.
Calculate the enthalpy change for this...
Consider the formation of glucose from carbon dioxide and water (i.e., the reaction of the photosynthetic...
Consider the formation of glucose from carbon dioxide and water
(i.e., the reaction of the photosynthetic process):
6CO2(g)+6H2O(l)→C6H12O6(s)+6O2(g).
The following table of information will be useful in working this
problem:
T= 298 K
CO2(g)
H2O(l)
C6H12O6(s)
O2(g)
ΔH∘f (kJ mol−1)
-393.5
-285.8
-1273.1
0.0
S∘ (J mol−1 K−1)
213.8
70.0
209.2
205.2
C∘P,m (J mol−1 K−1)
37.1
75.3
219.2
29.4
A. Calculate the entropy change for this chemical system at
T = 298 K.
B. Calculate the enthalpy change for...
The reaction of methane with water to form carbon dioxide and hydrogen is non-spontaneous at 298...
The reaction of methane with water to form carbon dioxide and
hydrogen is
non-spontaneous at 298 K. Use the thermodynamic data from the table
(it refers to 298 K) and determine at which temperature the system
will make the transition from non-spontaneous to spontaneou
Substance: CH4(g) H2O(g)
CO2(g) H2(g)
ΔH° f (kJ/mol): -74.87 -241.8
-393.5 0
ΔG° f (kJ/mol): -50.81 -228.6 -394.4 0
S°(J/K·mol): 186.1 188.8
213.7 130.7
An enzyme is discovered that catalyzes the chemical reaction SAD --> <-- HAPPY A team of...
An enzyme is discovered that catalyzes the chemical reaction
SAD --> <-- HAPPY
A team of motivated researchers set
out to study the enzyme, which they call happyase. Under a constant
enzyme concentration, [E] of 2.0 uM, they studied the relationship
between substrate concentration [SAD] and reaction velocity
V0. Their data is shown below:
[SAD]
(uM)
V0
(uMs-1)
20
3.4 x 103
40
5.4 x 103
60
6.6 x 103
80
7.4 x 103
Can you...
what is the substrate in Urease test? what is the enzyme in urease test? what is...
what is the substrate in Urease test? what is the enzyme in
urease test? what is the pH indicator in the urease test? what is
the end products in the urease test? what genera is the urease test
helpful in identifying?
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water ....
Gaseous butane will react with gaseous oxygen to produce gaseous
carbon dioxide and gaseous water . Suppose 5.23 g of butane is
mixed with 12. g of oxygen. Calculate the maximum mass of carbon
dioxide that could be produced by the chemical reaction. Be sure
your answer has the correct number of significant digits.
When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water. The...
When methane (CH4) burns, it reacts with oxygen gas
to produce carbon dioxide and water.
The unbalanced equation for this
reaction is CH4(g)+O2(g) →
CO2(g)+H2O(g)
This type of reaction is referred
to as a complete combustion reaction.
B. What mass of carbon dioxide is produced from the
complete combustion of 5.00×10−3 (g) of methane? w/
units.
C. What mass of water is
produced from the complete combustion of
5.00×10−3 g of
methane? w/ units.
D. What mass of
oxygen is...
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