Calculate the mole fractio of ethanol in a sample of spirit containing 92% ethanol by mass. | 12...

What will be the mole fraction of ethanol in a sample of spirit containing 85% ethanol by mass ?

Calculate the mole fraction of ethanol if 9.2 g of it is mixed with 1.8 g water.

Calculate the mole fraction of benzene in a solution containing 30 % by mass of it in carbon tetrachloride.

Calculate the number of moles of iron in a sample containing 10^(22) atoms of iron.