What is the percent yield if 3.74 g of copper is produced when 1.87 g aluminum is reacted with an excess of copper (II) sulfate? 2Al + 3CuSO4 Al2(SO4)3 + 3Cu

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

The same side of the moon always faces earth because the