Calculate the volume occuiped by 7g of nitrogen gas at 27degree centigrade and 750 mm of Hg pressure?

Answer 1

assuming the gas is ideal, we can use the ideal gas law:
PV = nRT
where
P = pressure (in atm)
V = volume (in L)
n = number of moles
R = gas constant = 0.0821 L-atm/mol-K
T = temperature (in K)
note that n = mass given / molar mass. The molar mass of nitrogen (diatomic gas) is equal to 28 g/mol. Also, K = C + 273 and 1 atm = 760 mm Hg.
substituting,
(750/760)*(V) = (7/28)*(0.0821)*(27+273)
now solve for V. units in liters.

hope this helps~ :)

Answer 2

7.8litres