1. (a) Magnesium chloride: (MgCl2) (b) Calcium oxide: (CaO) (c) Copper nitrate: (Cu(NO3)2) (d) Aluminum chloride: (AlCl3) (e) Calcium carbonate: (CaCO3) These chemical formulas represent the combinations of atoms in each compound. For instance, magnesium chloride consists of one magnesium atom (Mg) andRead more

    (a) Magnesium chloride: (MgCl2)

    (b) Calcium oxide: (CaO)

    (c) Copper nitrate: (Cu(NO3)2)

    (d) Aluminum chloride: (AlCl3)

    (e) Calcium carbonate: (CaCO3)

    These chemical formulas represent the combinations of atoms in each compound. For instance, magnesium chloride consists of one magnesium atom (Mg) and two chlorine atoms (Cl2 ) bonded together, forming the compound (MgCl2). Similarly, the other compounds listed have their respective combinations of elements represented in their chemical formulas.

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  2. (a) Quick lime: The compound for quick lime is Calcium oxide (CaO). The elements present in quick lime are: - Calcium (Ca) - Oxygen (O) (b) Hydrogen bromide: The compound for hydrogen bromide is Hydrobromic acid (HBr). The elements present in hydrogen bromide are: - Hydrogen (H) - Bromine (Br) (c) BRead more

    (a) Quick lime: The compound for quick lime is Calcium oxide (CaO). The elements present in quick lime are:
    – Calcium (Ca)
    – Oxygen (O)

    (b) Hydrogen bromide: The compound for hydrogen bromide is Hydrobromic acid (HBr). The elements present in hydrogen bromide are:
    – Hydrogen (H)
    – Bromine (Br)

    (c) Baking powder: Baking powder is a mixture that often contains compounds like sodium bicarbonate (NaHCO3) and an acid, such as cream of tartar (potassium hydrogen tartrate -KHC4H4O6). The elements present in baking powder can include:
    – Sodium (Na)
    – Hydrogen (H)
    – Carbon (C)
    – Oxygen (O)
    – Potassium (K)
    – Tartaric acid: Carbon (C), Hydrogen (H), Oxygen (O)

    (d) Potassium sulphate: The compound for potassium sulphate is (K2SO4). The elements present in potassium sulphate are:
    – Potassium (K)
    – Sulfur (S)
    – Oxygen (O)

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