How many moles of N2 (g) are in a 100.0 ml container at a pressure of 74.5 atmospheres and a temperature of 32.0 oC?

1 Answer
Junaid Mirza
May 10, 2018

#"0.298 mol"#

Explanation:

Use ideal gas equation

#"PV = nRT"#

Where

  • #"P ="# Pressure exerted by gas
  • #"V ="# Volume of gas
  • #"n ="# Number of moles of gas
  • #"R ="# Ideal gas constant #"= 0.0821 L atm / (mol K)"#
  • #"T ="# Temperature of gas

#"n" = "PV"/"RT" = (74.5 cancel"atm" × 0.1 cancel"L")/(0.0821 cancel"L" cancel"atm" // ("mol" cancel"K") × (32 + 273) cancel"K") ≈ "0.298 mol"#

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