Courtney Venable

The liquid contains 66.6c, 11.2% H and 22.2% 0. What is its molecular formula? How do i figure that?

determine the volume in liters of hydrogen gas that would have been produced if 8.00 dm of magnesium had been used at a temperature of 24C and a barometric pressue of 762.8 torr

A sample of a volatile liquid is vaporized completely in a 240 ml falsh at 99 c and 757 torr. The vapor is then allowed to condense to al liquid and its mass is determined to be .564 grams. What is the molecular mass of the liquid (that was vaporized)?

Two more questions. To prepare a sample of hydrogen gas, as studen reacts zinc w/ hydrochloric acid. The hydrogen is collected over water at 22c and the total pressue is 750 mm hg. What is the partial pressue of H2?