Calculating the number of moles
A sample of 1.00 L of gas at NTP conditions contains 20% oxygen and 80% nitrogen. Calculate the number of moles of each gas.
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The heat of vaporization of benzene, C6H6 , is 30.8 kJ/mol at its boiling point of 80.1 °C. How much heat is required to vaporize 128 g benzene at its boiling point.
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