The combustion of ethanol, c2h5oh(l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical equation?
a) c2h5oh(l) + o2(g) → co2(g) + h2o(g)
b) c2h5oh(l) + 3o2(g) → 2co2(g) + 3h2o(g)
c) 2co2(g) + 3o2(g) → c2h5oh(l) + 3h2o(g)
d) 2co2(g) + 3h2o(g) → c2h5oh(l) + 3o2(g)

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)