chemistry

posted by .

mass= 3.8721g
temperature= 102 degrees Celsius
volume= 156ml
atmospheric pressure= 755.0 mm Hg

calculate the molar mass using the ideal gas law

• chemistry -

Use PV = nRT to solve for n = number of moles. Don't forget that T is in Kelvin.

Then n = grams/molar mass
You know n and grams, solve for molar mass.

• chemistry -

so all the units i have to change is just for temperature and then leave the rest as they are

• chemistry -

No. T is in Kelvin.
P is in atmospheres.
V is in L.
Use 0.08206 L*atm/mol*K for R.

Similar Questions

1. Chemistry

If I have the temperature, the pressure and the mass how do I calculate the volume?
2. Chemistry

I have no idea how to do this problems can somebody help me: 1.How many mL of and oxygen gas can be produced form the termal decmpositon of 0.340 g of hydrogen peroxide at 700°C and 755 mm Hg?
3. Chemistry

1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr …
4. Chem hw!

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume?
5. Chem hw!

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume?
6. Chemistry

Okay, so I got question 1 but I don't know how to solve question 2. Since they are tied in, I'll post both of them. 1. When 0.43g of NaNO2 is allowed to react with an excess of HSO3NH2, the volume of N2 gas produced is 0.145 L. After …
7. Chemistry 111

A gas occupies a volume of 256mL at a pressure of 250torr at 32 degrees Celsius. Calculate the pressure (in atmosphere)if the volume is reduced to 156mL and the temp is increased to 62 degrees Celsius. I really need the formula that …
8. Chemistry

A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was collected over water at 21.0 degrees Celsius. The levels of water inside and outside the gas collecting tube …
9. General Chemistry

A 0.1358g zinc metal reacts completely with Dil HCL to produce 52.20ml of H2(g) at 22.0 degrees Celsius. The hydrogen gas is collected over water at 22.0 degree Celsius and a barometric pressure of 755 mm Hg. The water vapor pressure …
10. chemistry

472 mL of H2 gas was collected over water when 1.256 g of Zn reacted with excess HCl. The atmospheric pressure during the experiment was 754 mm Hg and the temperature was 26 degrees C. A. Write the balanced chemical equation (I have …

More Similar Questions