we can use the ideal gas law equation to solve for the number of moles present PV = nRT P - pressure - 107 kPa V - 39.0 x 10⁻⁶ m³ n - number of moles R - 8.314 Jmol⁻¹K⁻¹ T - temperature in K - 27 °C + 273 = 300 K Substituting these values into the equation 107 000 Pa x 39.0 x 10⁻⁶ m³ = n x 8.314 Jmol⁻¹K⁻¹ x 300 K n = 1.67 x 10⁻³ mol
