Stoichiometry and gases

Question 1 of 10

In the equation N₂ + 3H₂ → 2NH₃, how many moles of hydrogen react with 2 moles of nitrogen?

Question 2 of 10

At constant pressure, the volume of a gas is directly proportional to its

Question 3 of 10

How many moles are in 4 g of sodium hydroxide? (Na = 23, O = 16, H = 1)

Question 4 of 10

How many moles are in 9 g of water (H2O = 18 g/mol)?

Question 5 of 10

The molar mass of CO2 (C = 12, O = 16) is

Question 6 of 10

The empirical formula of a compound with 40% C, 6.7% H and 53.3% O is

Question 7 of 10

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

Question 8 of 10

Find the percentage of nitrogen in NH₄NO₃. (N = 14, H = 1, O = 16)

Question 9 of 10

A gas occupies 200 cm³ at 300 K. At constant pressure, its volume at 600 K is

Question 10 of 10

25.0 cm³ of 0.10 mol/dm³ NaOH neutralises 20.0 cm³ of HCl. The concentration of the acid is