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i just don't know where to begin/how

a) Write a balanced chemical equation for: potassium carbonate + magnesium chloride


b) Write a balanced chemical equation for: sulfuric acid + calcium carbonate


c) Write a balanced chemical equation for: sodium sulfate + calcium nitrate


d) Write a balanced chemical equation for: sulfur tetrafluoride + water

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2 answers
  1. What's your trouble here. You need to learn to do this yourself. I'll be glad to help you through.

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  2. first write just the compounds.

    K2CO3 + MgCl = KCl + MgCO3

    Note you have 2K on the left, but just one on the right. Fix that:

    K2CO3 + MgCl2 = 2KCl + MgCO3

    Now things match on both sides

    Similarly, you can work your way to

    H2SO4 + CaCO3 = CaSO4 + CO2 + H2O
    Na2SO4 + Ca(NO3)2 = CaSO4 + 2NaNO3
    SF4 + 3H2O = H2SO3 + 4HF

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