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

The percentage composition (by weight) of a solution is 45% X, 15% Y , and 40% Z . Calculate the mole fraction of each component of the solution. (Molecular mass of X = 18, Y = 60 , and Z = 60)

A mixture of ethanol and water contains 54% water by mass. Calculate the mole fraction of alcohol in this solution.

A solution contains 2.5 mol of H_(2) O . Calculation the mole fraction of each component of the solution.

The percentage composition by mass of a solution is 20% urea (NH_(2) CONH_(2)) , 40% glucose (C_(6) H_(12) O_(6)) , and 40% water (H_(2) O) . Calculate the mole fraction of each component of the solution.

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

A compound made of two elements A and B is found to contains 25% A (atomic mass 12.5) and 75% B (atomic mass 37.5). The simplest formula of the the compound is :-

Assertion: The weight percentage of a compound A in a solution is given by % of A=("Mass A")/("Total mass of solution")xx100 Reason: The mole fraction of a component A is given by, Mole fraction of A =("No. of moles of A")/("Total no. of moles of all components")

Vinegar is a solution of (A) 50% acetic acid in ethanol (B) 10% of acetic acid in alcohol (C) 6% acetic acid in water (D) 50% acetic acid in water

The percentage of ethyl alchol by weight is 46% in a mixture of ethanol and water. The mole fraction of alcohol in this solution is

Taking the composition of air to be 75% of nitrogen and 25% of oxygen by weight, calculate the velocity of sound through air.