Alcohol Fuels Using butanol (C2H5OH) rather than ethanol as a gasoline additive has an advantage in providing a higher fuel value when mixed with octane. At 20°C, the vapor pressure of butanol is 5 torr and the vapor pressure of octane is 10 torr.
What is the vapor pressure at 20°C of a solution prepared by mixing 16.2 g of butanol and 127 g of octane?

Asample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true? the rate of freezing is equal to the rate of melting. the rate of freezing is greater than the rate of melting. the amount of ice is greater than the amount of water. the amount of ice is equal to the amount of water.