General, Organic and Biological Chemistry An Integrated Approach 2nd. Edition by Kenneth W. Raymond | 9780470129272 | 0470129271 | Holooly

General, Organic and Biological Chemistry An Integrated Approach [EXP-50957]

234 SOLVED PROBLEMS

Question: 5.pp.10

A 35 L gas cylinder contains a mixture of 7.5 g of N2 , 2.5 g of O2 , and 1.5 g of He. At 35^°C, what is the partial pressure (in atm) of each gas and what is the total pressure?

Verified Answer:

P_{N_{2}} = 0.19 atm

;

P_...

Question: 5.pp.2

A 55 g block of aluminum and a 55 g block of copper are placed side by side on the burner of a stove. When the stove is turned on, the temperature of each metal increases from 25^°C to 150^°C. Which metal has absorbed more heat energy?

Verified Answer:

Copper.

Question: 7.pp.11

A sample of blood serum is tested and found to contain a total uric acid concentration of 4.2 mg/dL. How many grams of uric acid are present in 0.025 L of this serum?

Verified Answer:

0.0011 g

Question: 5.pp.6

A visiting home care nurse checks the pressure gauge on a patient’s portable oxygen tank and sees that it contains 815 psi of O2 . This reading may be inaccurate because the patient has been sitting in the sun and the tank has warmed to 35^°C. What would the pressure reading be at a temperature

Verified Answer:

789 psi

Question: 5.pp.9

a. A flask is filled with 0.25 mol of gas at standard temperature and pressure. What is the volume of the flask in liters? b. What is the pressure (in torr) in the flask if the temperature is reduced by 25^°C?

Verified Answer:

a. 5.6 L; b. 690 torr (two significant figures)

Question: 5.pp.4

a. A pressure of 35.0 psi is how many torr? b. A pressure of 750 torr is how many atmospheres?

Verified Answer:

a. 1.81

\times 10^{3}

torr; b. 0...

Question: 1.pp.1

a. Describe changes in the kinetic energy and the potential energy of a barbell when a weightlifter picks it up. b. Describe changes in the kinetic energy and the potential energy of a weightlifter when a barbell is picked up.

Verified Answer:

a. Sitting on the floor, the barbell contains some...

Question: 10.pp.7

a. Draw the four stereoisomers of 3-bromo-4-methylhexane (Sample Problem 10.7). b. Label pairs of enantiomers and identify diastereomers.

Verified Answer:

b. enantiomers: A and B, C and D; diastereo...

Question: 9.pp.8

a. For the buffer described in Sample Problem 9.8, write a reaction equation that shows what takes place when OH^− is added to this buffer. b. Over what pH range is this buffer effective? (See Table 9.4.)

Verified Answer:

a.

H_{2}PO_{4}^{-} + OH^{-} \longrightarro...

Question: 15.pp.5

a. From the answer to Sample Problem 15.5b, what will be the total yield of ATP once all of the acetyl-CoA has moved through the citric acid cycle and all of the reduced coenzymes produced (including those from the citric acid cycle) have been used for electron transport and oxidative

Verified Answer:

a. 36 ATP; b. 36 ATP for hexanoic acid, 30 or 32 A...

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