A cubic meter of air near saturation may contain 28 grams, or about 1.6 moles of water molecules at 30 °C, but only 8 grams, or about 0.44 mole of water molecules per cubic meter of air at 8 °C. Find the pressure of air near saturation at both 30 °C and at 8 °C. Show or explain your work.

Based on your results, explain why it is important to know temperature of air when considering how much air pressure may be due to water vapor.