10. translate each of the following chemical equations into a sentence. a. 2 zns(s) + 3 o2(g) -> 2 zno(s) + 2 so2(g) b. cah2(s) + 2 h2o(l) -> ca(oh)2 (aq) + 2 h2(g)

The products of both equations are Zinc oxide, sulphur dioxide, Calcium hydroxide and hydrogen gas.

2 moles of Zinc sulphide in solid form combines with 3 moles of Oxygen in gaseous which produces 2 moles of Zinc oxide in solid and 2 moles of sulphur dioxide in gaseous form.

1 mole of Calcium hydride in solid form reacts with 2 moles of water molecules in liquid form to give 1 mole of Calcium hydroxide in liquid form and 2 moles of hydrogen gas is form.

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a)

2 moles of Zinc sulphide in solid form reacts with 3 moles of Oxygen in gaseous form to give 2 moles of Zinc oxide in solid form and 2 moles of sulphur dioxide in gaseous form.

b)  

1 mole of calcium hydride in solid form reacts with 2 moles of liquid water to give 1 mole of calcium hydroxide dissolved in water and 2 moles of hydrogen in gaseous form.

The chemical reactions are written by writing the chemical formula of the reactants on left side of the arrow followed by chemical formula of the products. The number of atoms of each element must be balanced to follow the law of conservation of mass.