Sciences Co-ordinated 9-1 0973: C3 - Stoichiometry Topical Past Paper Questions
Cambridge IGCSE Sciences Co-ordinated 9-1 (0973) past-paper questions on C3 - Stoichiometry, free. This topic is frequently examined across 13 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
A student determines the value of x in the formula of washing soda, $ \mathrm{Na}_{2}\mathrm{CO}_{3} \cdot x\mathrm{H}_{2}\mathrm{O} $. When washing soda crystals are heated, they release water from the crystals. The crystals form dry sodium carbonate powder as shown in the equat…
Petroleum is separated into useful fractions by fractional distillation. (a) Table 8.1 shows the boiling point range of three fractions obtained from petroleum. Table 8.1 State which fraction is obtained at the top of the fractionating column. (b) The diesel oil fraction can be c…
A student determines the percentage by mass of magnesium in a mixture of magnesium and copper using two different calculations. When the mixture of magnesium and copper is added to dilute hydrochloric acid, only the magnesium reacts. Hydrogen gas is made which is collected and me…
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