Mole Concepts Questions

10 molal solution is prepared by dissolving x g of urea (Molar mass = 60 g mol–1 ) in 100 g of water. The value of x is:

Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R): Assertion (A): 2 moles of N2 on reaction with 9 moles of H2 will produce 4 moles of NH3. Reason (R): H2 is a limiting reagent. In the light of above

The molarity of solution containing 9.8 g of H2SO4 in 500 mL solution is:

x g of propane (C3H8) on combustion with 32 g of oxygen produces 26.4 g of CO2 and 14.4 g of H2O. The value of x is:

20 g of metal combines with oxygen to form 60 g of metal oxide (MO). The percentage of oxygen in metal oxide is

Which one contains the maximum number of molecules?

Nitrogen and oxygen combines to form N2O5 and NO2 containing 25.92% and 30.43% of Nitrogen respectively by mass, the data illustrates;

Calculate the total number of moles in 5.6 L N2.

92g of a compound on analysis gave 24g C, 4g H and 64g O. The empirical formula of compound is;

4 moles of SO2 and 6 moles of O2 react to form SO3. Total number of moles of reactant and product in the container when only 70% SO2 is used is;