Mole Concept Te...

The number of hydrogen molecules in 4.032 g is

A solution is prepared by dissolving 2.6 g of H₂SO₄ in 40 g of water. Which of the following is the correct value of mole fraction of H₂SO₄?

What is the ratio by mass of sulphur and oxygen in SO₂?

The number of atoms present in 112 grams of N₂ is

How many number of particles are present in 16 g of O₂?

Calculate the number of molecules in 4.25 g of H₂SO₄.

What is the mass in grams of 2.5 moles of slaked lime [Ca(OH)₂]?
(Atomic masses: Ca = 40 g, O = 16 g and H = 1 g)

What is the volume (in litres) occupied by 49.8 g of HCl at STP?

Calculate the volume occupied by 2.9 g of butane at STP.

0.1 gm of a divalent metal liberates 56 ml of hydrogen from an acid at STP. The atomic weight of the metal is

What is the total number of moles at the end of reaction when one mole each of CO and O₂ are made to react at STP?

Molecular weight of heavy water used as a moderator in nuclear reactors is

Which of the following quantities is the molecular mass of AI₂(SO₄)₃? The atomic masses of AI, S and O are 27, 32 and 16 respectively.

What is the molecular mass of CaCO₃?

Calculate the molar mass of ammonium sulphate.

How is relative molecular mass of a gas related to its vapour density?

The molecular mass of Cl₂ is

Percentage of metal in metallic oxide is 60. Its equivalent weight is

The percentage of nitrogen in dry air is

A compound of nitrogen and oxygen, on analysis, showed that it contained 28 g of nitrogen for every 32 g of oxygen. Which of the following formulae correctly represents the compound?