Respuesta :

Answer:

2.174 gm

Explanation:

PV = nRT       n = number of moles

                       R = gas constant = .082057 L-atm/(K-mol)

                           T must be in units of K

.870 (3.95) = n (.082057)(35+273.15)    

   solve for n = .1359 moles

Methane mole weight (CH4) = 16 gm / mole

.1359 moles  *  16 gm/mole = 2.174 gm