Posted by **Anonymous** on Monday, November 7, 2011 at 1:49pm.

A sample of air from the basement of a home is found to

contain 8.3 ppm of radon. What is the partial pressure of radon

in the basement if the total pressure is 755 torr?

- chemistry -
**DrBob222**, Monday, November 7, 2011 at 9:55pm
I assume that is 8.3 ppm v/v; if so I would convert that to percent.

(8.3E-6 L/10^6 L)* 100 = mole percent = about 8.3E-10%. Convert that to a fraction (divide by 100) to give mole fraction Rn_, then

p_{Rn} = X_{Rn}P_{total}

- chemistry -
**DrBob222**, Tuesday, November 8, 2011 at 11:42am
I erred here. 8.3 ppm should be expressed as 8.3E-6 mole fraction Rn.

## Answer this Question

## Related Questions

- chemistry - The safe level of radon gas at home is 4X10e-12 Ci/L or less. If you...
- statistics - A random sample of the houses in a particular city is selected and...
- Chemistry - Recently, there has been much concern about pollution in the home ...
- AP CHEM! PLEASE HELP - A sample consisting of various gases contains 2.6 10-6 ...
- math - A random sample of the houses in a particular city is selected and each ...
- Math - Rachel wants to carpet the rectangular floor of his basement . The ...
- math - Rachel wants to carpet the rectangular floor of his basement . The ...
- Chemistry - A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume...
- Thermodynamics - Heyy, Okay so I have a question that I'm trying to figure out ...
- Chemistry - The half-life of radon-222 is 3.82 days. If a sample of gas contains...