Chapter 8: Q. 8.61 (page 279)

Whitney's lung capacity was measured as $3.2 L$ at a body temperature of $37 ° C$ and a pressure of $745 m m H g$ . What is her lung capacity, in liters, at STP?

Short Answer

Expert verified

Whitney's lung capacity at STP is $2.8 L$ .

Step by step solution

Given Information

We need to find Whitney's lung capacity at STP.

Simplify

Now,

STP conditions mean:

Standard temperature is exactly $0 ° C (273 K)$
Standard pressure id exactly $1 a t m (760 m m H g)$

Combined gas law :

$\frac{P_{1} \times V_{1}}{T_{1}} = \frac{P_{2} \times V_{2}}{T_{2}}$

Consider:

initial pressure $P_{1} = 745 m m H g$

final pressure $P_{1} = 760 m m H g$

initial volume $V_{1} = 3.2 L$

initial temperature $T_{1} = 37 ° C = (37 + 273) K = 310 K$

final temperature $T_{2} = 0 ° C = (0 + 273) K = 273 K$

Now, finding the final volume $V_{2}$ :

$\frac{P_{1} \times V_{1}}{T_{1}} = \frac{P_{2} \times V_{2}}{T_{2}}$

$V_{2} = (\frac{P_{1} \times V_{1}}{T_{1}}) \times (\frac{T_{2}}{P_{2}}) V_{2} = (\frac{745 m m H g \times 3.2 L}{310 K}) \times (\frac{273 K}{760 m m H g}) V_{2} = \frac{650832 L}{235600} V_{2} = 2.8 L$

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Whitney's lung capacity was measured as $3.2 L$ at a body temperature of $37 ° C$ and a pressure of $745 m m H g$ . What is her lung capacity, in liters, at STP?

Short Answer

Step by step solution

Given Information

Simplify

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Whitney's lung capacity was measured as 3.2Lat a body temperature of 37°Cand a pressure of 745mmHg. What is her lung capacity, in liters, at STP?

Short Answer

Step by step solution

Given Information

Simplify

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Kinetics

Chemical Analysis

Making Measurements

Physical Chemistry

Organic Chemistry

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.

Whitney's lung capacity was measured as $3.2 L$ at a body temperature of $37 ° C$ and a pressure of $745 m m H g$ . What is her lung capacity, in liters, at STP?