A solution is 25% water, 25% ethanol and 50% acetic acid by mass. Calculate the mole farction of each component.

Calculate the mass % of carbon in ethanol.

Calculate the mass % of carbon in ethanol.

A mixture of 20% ethanol and 50% gasoline is called as.

Wood's metal contains 50.0% bismuth, 25.0% lead, 12.5% tin and 12.5% cadmium by mass. What is the mole fraction of tin ?(\ (Atomic mass : Bi=209, Pb=207, Sn=119, Cd=112)

Calculate the mass of 2.5 mole of naphthalene.

A first order reaction is 50% complete in 69.3 minutes. Calculate the time for 80% completion of the reaction.

Calculate the mass of 2.5 mole of naphthalene

A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.