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CHEM0306010
Carbon monoxide burns in oxygen to produce carbon dioxide.
2CO(g) + O2(g) → 2CO2(g)
Find the mass of carbon dioxide produced from the burning of 14g of carbon monoxide?
CHEM0306020
Aluminium reacts with chlorine.
xAl + yCl₂ → zAlCl₃
Find the value of x, y and z that balance the equation
CHEM0306030
Sodium hydrogen carbonate undergoes thermal decomposition as shown in the equation below.
2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O
What is the maximum mass of sodium carbonate that can be made from 0.20 moles of sodium hydrogen carbonate?
[Relative atomic mass: Na = 23; C = 12; O = 16
CHEM0306040
What is the balanced chemical equation for the reaction between magnesium and hot water?
CHEM0306050
The equation below shows the reaction between magnesium and dilute sulfuric acid.
Mg + H₂SO₄ → MgSO₄ + H₂
Find the mass of magnesium sulfate formed if 18 g of magnesium is reacted with sulfuric acid?
[Relative atomic mass: Magnesium: 24; Magnesium sulphate: 120]
CHEM0306060
When heated strongly calcium carbonate decomposes to form calcium oxide and carbon dioxide gas.
CaCO₃ → CaO + CO₂
Find the volumes of carbon dioxide gas produced ( at room temperature and pressure) when 40 g of calcium carbonate is heated [Relative atomic mass: Ca: 40; C: 12; O:16; Molar volume of gas at room temperature and pressure: 24 dm³/mol]