# chemistry

posted by .

A sample of gas with a mass of 1.62 g occupies a volume of 941 mL at a pressure of 748 torr and a temperature of 20.0 C. What is the molar mass of the gas?

• chemistry -

Use PV = nRT and solve for n = number of mols. Then n = grams/molar mass and solve for molar mass.
Remember T must be in kelvin, volume in L, and P in atmospheres.

• chemistry -

42.1

## Similar Questions

1. ### Chemistry

A sample of gas has a mass of 0.555 g. Its volume is 119 mL at a temperature of 90 degrees C and a pressure of 744 mmHg. What is the molar mass of the gas?
2. ### Chemistry

A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas?
3. ### Chemistry

A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas?
4. ### chemistry

A sample of gas has a mass of 0.555g . Its volume is 114L at a temperature of 80degrees C and a pressure of 744mmHg .Find the molar mass of the gas
5. ### Chemistry

A sample of gas has a mass of 0.550g . Its volume is 111mL at a temperature of 75∘C and a pressure of 763mmHg . Find molar mass of gas
6. ### Chemistry

Help please? 1)A sample of propane gas occupies 625 cm3 at 20.0 °C and 750 torr. What is the final volume in cubic centimeters at -80.0 °C and 750 torr?
7. ### chem

Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K?
8. ### Molar mass

A sample of gas has a mass of 0.580g . Its volume is 119mL at a temperature of 80∘C and a pressure of 743mmHg . Find the molar mass of the gas. I think I got a step wrong in the problem, please help?
9. ### Chemistry

A gas weighing 23.6 g occupies a 10.0 L flask at 27 C and 780. torr of pressure. Calculate the molar mass of the gas.
10. ### Chemistry

A stp a certain mass of gas occupies a volume of 790cm3, find the temperature at which the gas occupies 1000cm3 and has a pressure of 726mmhg

More Similar Questions