Answer:
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is the product of the mass and velocity of an object, quantified in kilogram-meters per second.
Moles of the unknown gas in the flask : 0.216
<h3>Further explanation</h3>
The gas equation can be written

where
P = pressure, atm
V = volume, liter
n = number of moles
R = gas constant = 0.08206 L.atm / mol K
T = temperature, Kelvin
V=5 L
P = 1.05 atm
T = 296 K
