Stoichiometry and Mole Concept
GCE Chemistry
10 Stoichiometry and Mole Concept practice questions covering everything you need for GCE.
Drill Stoichiometry and Mole Concept →Sample Stoichiometry and Mole Concept questions
(a) Define the term 'mole' as used in chemistry. (2 marks) (b) Calculate the number of moles of atoms present in 9.0 g of aluminium. [Al = 27] (2 marks) (c) Calcium carbonate decomposes on heating acc…
In an experiment, 5.6 g of iron filings were added to excess dilute tetraoxosulphate(VI) acid. The reaction proceeded according to the equation: Fe(s) + H2SO4(aq) → FeSO4(aq) + H2(g) [Fe = 56, S = 32,…
At s.t.p., what volume is occupied by 0.50 mol of carbon(IV) oxide gas?
Which of the following contains the greatest number of molecules?
In the reaction $2H_2 + O_2 \rightarrow 2H_2O$, what mass of water is produced when 4 g of hydrogen reacts completely with excess oxygen? [H = 1, O = 16]
How many moles of atoms are contained in 4.0 g of calcium? [Ca = 40]
25.0 cm³ of 0.200 mol/dm³ sodium hydroxide solution is exactly neutralised by 20.0 cm³ of sulphuric acid solution. What is the concentration of the sulphuric acid? [Equation: $2NaOH + H_2SO_4 \rightar…
What is the percentage by mass of nitrogen in ammonium trioxonitrate(V), NH₄NO₃? [H = 1, N = 14, O = 16]
A compound contains 40% carbon, 6.67% hydrogen, and 53.33% oxygen by mass. What is its empirical formula? [C = 12, H = 1, O = 16]
What is the mass of 0.25 mol of trioxonitrate(V) acid, HNO₃? [H = 1, N = 14, O = 16]