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Distinguish between relative molecular mass (Mr) and relative formula mass (Mrf). Explain why relative formula mass is used for ionic compounds.
The relative atomic masses of the following elements are: Carbon (C) = 12, Hydrogen (H) = 1, Oxygen (O) = 16, Nitrogen (N) = 14. Calculate the relative molecular mass of glucose (C6H12O6).
When magnesium carbonate (MgCO3) reacts with hydrochloric acid (HCl), it produces magnesium chloride (MgCl2), water (H2O), and carbon dioxide (CO2). A student reacted 1.0 g of magnesium carbonate with excess hydrochloric acid. Calculate the mass of magnesium chloride produced.