# At 22.5 ºC and 1.25 atm pressure, a sample of carbon dioxide gas occupies a volume of 2.65 L. How many moles of the gas are present?

##### 1 Answer

#### Answer:

#### Explanation:

We want to find the no. of moles, which is

Here

#"P = 1.25 atm"# #V = "2.65 L"# #R= "0.0821 atm(L)/mol(K)"# #T = 22.5^@"C" +273.15 = "295.7 K"#

Now plug it into the formula