A quiz covering quantitative chemistry topics including conservation of mass, balancing equations, relative formula mass, moles, and concentration. Test…
10 questions • Zestly
• In a chemical reaction, the law of conservation of mass states that the total mass of the products must equal the total mass of the…
• Which of the following chemical equations are correctly balanced?
• Calculate the relative formula mass (Mr) of calcium carbonate, CaCO3. (Relative atomic masses: Ca = 40, C = 12, O = 16)
• How many moles are present in 22 g of carbon dioxide, CO2? (Relative atomic masses: C = 12, O = 16)
• What is the concentration of a solution in g/dm3 if 5 g of sodium chloride is dissolved to make 200 cm3 of solution?
• Which of the following statements correctly describe why mass might appear to change in a non-enclosed system?
• Calculate the mass of 0.2 moles of water, H2O. (Relative atomic masses: H = 1, O = 16)
• In the reaction Mg + 2HCl → MgCl2 + H2, what mass of hydrogen gas is produced from 24 g of magnesium? (Relative atomic masses: Mg = 24, H =…
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