Thursday
December 5, 2013

# Posts by Garcia

Total # Posts: 48

Chemisty
I keep getting the answer to the volume of the atmosphere wrong. Are my calculations correct? Or what is my problem? I calculate that the total volume of Earth + thickness of atmosphere is: (4/3)*pi*(6450000 m)^3 = 1.124*10^21 I then calculate that the volume of the Earth is: ...

Chemisty
It is not one question. It is a series of questions. First calculate the total volume of the atmosphere. Second calculate the total number of gas molecules in the atmosphere. Third calculate the number of gas molecules in Caesar's last breat. Fourth calculate what fraction...

Chemisty
Enrico Fermi was a famous physicist who liked to pose what are now known as Fermi problems in which several assumptions are made in order to make a seemingly impossible estimate. One example of a Fermi problem is "Caesar's last breath" which estimates that you, r...

Chemistry
I calculated the molar mass to be approximately 29 g/mol. Although I am not entirely sure whether that is the correct answer or not.

Chemistry
Dry air (0% humidity) is approximately 78% N2, 21% O2, and 1% Ar by moles. Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures in your answers.

Chemistry
A 7.30-L container holds a mixture of two gases at 45 °C. The partial pressures of gas A and gas B, respectively, are 0.342 atm and 0.527 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?

Chemistry
Thanks. :)

Chemistry
The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL–1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 555-mm column of di-n-butyl phthalate. The density of mercury is 13.53 g·mL...

Chemistry
Makes sense now. Thank you.

Chemistry
So would it look like this: 2.40*752=P2*931 for gas 1 4.80*179=P2*931 for gas 2 Then add the two P2's that I get. Right?

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | Next>>

Search
Members