Answer: H2O (water)
Explanation:
The answer choices for this question are:
A) H2O
B) N2
C) SO2
D) NO3
E) Cl2
The solution of the problem is:
1) Data:
density, d = 1.4975 g/liter
volume, V = 8.64 liter
pressure, p = 2.384 atm
temperature, T = 349.6 K
2) Formulas:
d = m/V => m = d*V
n = m / molar mass => molar mass = m / n
pV = nRT => n = pV / RT
3) Solution
n = pV / RT = 2.384 atm * 8.64 liter / (0.0821 atm*liter/K*mol * 349.6K)
n = 0.7176 moles
m = dV = 1.4975 g/ liter * 8.64 liter = 12.9384 g
molar mass = m / n = 12.9384 g / 0.7176 moles = 18.03 g/mol
That molar mass corresponds to the molar mass of water, therefore the gas is H2O (water vapor).
