Question

What is ΔG at body temperature (37.0° C) if the concentration of A is 1.5 M and the concentration of B is 0.70 M?

Answer #1

Enzymes A(aq) ----->B(aq)
<-----
The ΔG°\' of the reaction is -7.510 kJ ·mol–1. Calculate the
equilibrium constant for the reaction. (Assume a temperature of 25°
C.)
What is ΔG at body temperature (37.0° C) if the concentration of
A is 1.8 M and the concentration of B is 0.75 M?

Before going in for his annual physical, a 70.0 kg man whose
body temperature is 37.0∘C consumes an entire 0.355 L can of a soft
drink (mostly water) at 13.0∘C. His body releases energy at a rate
of 7.00×103kJ/day (the basal metabolic rate, or BMR). Suppose that
the specific heat of the man's body is 3480 J/kg⋅K. How long will
this take the man's metabolism to return the temperature of his
body (and of the soft drink that he consumed)...

Following vigorous exercise, the body temperature of a 65.0 kg
person is 39.7°C . At what rate in watts must the person transfer
thermal energy to reduce the the body temperature to 37.0°C in 24.0
min, assuming the body continues to produce energy at the rate of
150 W? (1 watt = 1 joule/second or 1 W = 1 J/s). (Assume that the
specific heat of a human is chuman = 3,500 J/(kg · °C).)

A spherical tank, 1.5 m in diameter, is maintained at a
temperature of 120 ◦C and exposed to a convection environment with
heat transfer coefficient, h=15 W/m2
◦C and T∞ =20 ◦C. For the same surface
temperature of the tank, it is desired to insulate the tank in
order to decrease the heat loss by 45 percent, determine the
thickness of insulation layer (k=0.2 W/m ◦C ) and the outer surface
temperature.

A block of an alloy of mass 37.0 g and at a temperature of 15.51
°C is placed in a calorimeter containing 41.0 g of water at 81.93
°C. If the final temperature of the alloy and water is 39.77 °C,
calculate the specific heat (in J/g/K) of the metal. The specific
heat of water is 4.184 J/g/K. Express your answer to ***(((three
significant figures)) in scientific notation.

1. Homeostasis is involved with maintenance of
A. body temperature
B. blood pressure
C. salt concentration
D. all of the above
2. Metabolic water
A. is the water created during oxidation of food
B. is the free water found in even dry seeds
C. is the water lost during digestion of food
D. none of the above
3. Evaporative cooling depends on
A. cool water condensing on the skin's surface
B. high external temperature at 100 percent humidity
C. breaking...

How will an increase in temperature affect ΔG?
A) ΔG will decrease if the mass-action ratio is greater than 1
and increase if the mass-action ratio is less than 1, and will not
change if the mass-action ratio is equal to 1.
B) ΔG will not change
C) ΔG will increase
D) ΔG will decrease
E) ΔG will increase if the mass-action ratio is greater than 1
and decrease if the mass-action ratio is less than 1, and will not...

A researcher measured the body temperature of a random sample of
64 adults and found the mean and standard deviation to be 36.83oC
and 0.38oC, respectively. A temperature of 37.0°C is assumed to be
“normal”. Do these data suggest otherwise?
a. Provide an answer using a test of hypothesis.
b. Provide an answer using a 95% confidence interval.
c. Briefly explain the difference between part (a) and part
(b).

A solution containing the following was prepared at 25°C: 0.18 M
Pb2 , 1.5 × 10-6 M Pb4 , 1.5 × 10-6 M Mn2 , 0.18 M MnO4–, and 0.86
M HNO3. For this solution, the following balanced reduction
half-reactions and overall net reaction can occur.
5[Pb4+ + 2e- --> Pb2+]
E°= 1.690 V
2[MnO4- + 8H+ + 5e-
--> Mn2+ + 4H2O] E°=1.507
V
_______________________________________________________
5Pb4+ +
2Mn2+ + 8H2O <-->
5Pb2+ + 2MnO4- + 16H+
A) Determine E°cell,...

How will an increase in temperature affect ΔG?
A=delt g increase
B= ΔG will increase if the mass-action ratio is greater than 1
and decrease if the mass-action ratio is less than 1, and will not
change if the mass-action ratio is equal to 1.
C= no change
d= decrease
E= ΔG will decrease if the mass-action ratio is greater than 1
and increase if the mass-action ratio is less than 1, and will not
change if the mass-action ratio...

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