The mole concept

Question 1 of 10

The number of moles of oxygen atoms in 0.5 mol of CuSO₄ is

Question 2 of 10

How many moles are in 20 g of NaOH (Na = 23, O = 16, H = 1)?

Question 3 of 10

The volume occupied by 1 mole of a gas at s.t.p. is

Question 4 of 10

How many moles are in 11.2 dm³ of a gas at s.t.p.?

Question 5 of 10

What is the mass of 0.25 mol of sodium hydroxide, NaOH? (Na = 23, O = 16, H = 1)

Question 6 of 10

How many molecules are in 0.5 mol of water? (Avogadro's constant = 6.02 × 10²³ mol⁻¹)

Question 7 of 10

The molar mass of H₂SO₄ (H = 1, S = 32, O = 16) is

Question 8 of 10

How many moles are in 4.4 g of carbon dioxide? (C = 12, O = 16)

Question 9 of 10

The mass of 2 moles of oxygen molecules (O = 16) is

Question 10 of 10

What mass of sodium contains the same number of atoms as 6 g of carbon? (Na = 23, C = 12)