Tuesday

September 23, 2014

September 23, 2014

Posted by **Lee** on Wednesday, May 11, 2011 at 9:50pm.

a) what is the molar mass of the gas?

b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container, what will the new pressure be?

- Chemistry -
**DrBob222**, Wednesday, May 11, 2011 at 10:01pmNote the correct spelling of celsius.

1). Use PV = nRT and solve for n = number of moles, then n = grams/molar mass. You have n and grams, solve for molar mass. Don't forget to convert T to kelvin and P to atmospheres.

2) Add 0.400 g to grams already there, use the molar mass from the first part to convert grams to moles, then use PV = nRT and solve for pressure in atmospheres.

**Answer this Question**

**Related Questions**

Chemistry - A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr ...

Chemistry - A sample of a gas weighs 4.526g and has a volume of 890.0 mL at 645....

Chemistry - A sample of gas weighs 2.832g and has a volume of 1010.0 ML at 775....

chemistry - Someone can help me please? A gas sample weighing 0.528 g is ...

Chemistry - A sample of a gas weighs 4.526g and has a volume of 890.9 mL at 645....

Chemistry - If 0.896g of a gas occupies a 250mL flask at 20 degree celcius and ...

chemistry - A sample of gas with a mass of 1.62 g occupies a volume of 941 mL at...

chemistry - A 200-mL sample of Oxygen gas is collected at 26 degrees C and a ...

chemistry - 11.31) solve for the new pressure when each of the following ...

chemistry - A sample of unknown gas weighs 2.96 g and occupies 750. mL at 760. ...