0.04 moles of nitrogen (N₂)
Explanation:
To find the number of moles of nitrogen (N₂) we use the ideal gas law:
PV = nRT
n = PV / RT
where:
P - pressure (atm)
V - volume (L)
n - number of moles
R - gas constant 0.082 (L × atm / mol × K)
T - temperature (K)
n = (1.20 × 0.85) / [0.082 × (25 + 273.15)]
n = 0.04 moles of nitrogen
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ideal gas law
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