Final answer:
To find the mass of NO gas at STP, use the gas density equation by determining the molar mass and using the given pressure, gas constant, and temperature.
Step-by-step explanation:
To find the mass of NO gas at STP, we need to use the gas density equation. Firstly, we need to determine the molar mass of NO, which is 30.01 g/mol. Then, we'll use the gas density equation:
mass = density * volume
Plugging in the values, we have:
mass = (molar mass * pressure) / (gas constant * temperature)
Finally, substituting the values for the given constants (pressure = 1 atm, gas constant = 0.0821 L.atm/mol.K, temperature = 273 K), we can calculate the mass of 33.6 L of NO gas at STP.