Write a balanced molecular equation describing each of the following chemical reactions:
(a)solid calcium carbonate is heated and decomposes to sold calcium oxide and carbon dioxide
(b)gaseous butane, c4h10, reacts with diatomic oxygen gas to yield gaseous carbon dioxide and water vapor
(c)aaqeous solutions of magnesium chloride and sodium hydroxide react to produce solid magnesium hydroxide and aqueous sodium chloride
(d)water vapor reacts with sodium metal to produce solid sodium hydroxide and hydrogen gas

Explanation:

a)

1 mol of solid calcium carbonate on heating gives 1 mol of calcium oxide and 1 mol of carbon dioxide gas.

b)

2 moles of butane gas when reacts with 13 moles of diatomic oxygen gas to give 8 moles of carbon dioxide gas and 10 moles of water vapors.

c)

1 mol of magnesium Cordelia  reacts with 2 moles of sodium hydroxide to give 2 moles of aqueous sodium chloride solution and 1 mol of solid magnesium hydroxide.

d)

2 mole sof water vapors reacts with 2 moles of sodium metal to give 2 moles of solid sodium hydroxide and 1 mol of hydrogen gas.