The mass of ammonia gas, can be found by using the ideal gas law equation.
PV = nRT.
Rearrange the equation to solve for moles n then use the molar mass of ammonia 17 g/mol) to find the mass mass = n * molar mass.
The mass of the ammonia gas is 3.137 g.
How to determine mass of ammonia gas.
The mass of ammonia gas, can be found by using the ideal gas law equation PV = nRT
where
P is pressure,
V is volume,
n is the number of moles,
R is the ideal gas constant, and
T is temperature.
Rearrange the equation to solve for moles n then use the molar mass of ammonia 17 g/mol) to find the mass mass = n * molar mass.
Given the values V = 3.7 L.
T = 290K
P = 1.2atm and
the ideal gas constant R = 0.0821 Latm/mol
Substitute these into the equation to find the number of moles and then calculate the mass.
n = PV/RT
= 1.2 * 3.7/0.0821 *290
= 0.1865
Mass = mole * molar mass
= 0.1865 * 17
= 3.137 g
The mass of the ammonia gas is 3.137 g.