Question

compounds formed by the absorption and evolution of heat

Answer 1

Explanation:

=>Formation of water from molecular hydrogen and oxygen and theformation of a metal oxide such as

calcium oxide (CaO) from calcium metal and oxygen gas are examples.

2 H2O(g) → 2 H2(g) + O2(g)

Generally,evolution of heat in a reaction favours the conversion of reactants to products.

Answer 2

Answer:

Formation of water from molecular hydrogen and oxygen and theformation of a metal oxide such as calcium oxide (CaO) from calcium metal and oxygen gas are examples. ... 2 H2O(g) → 2 H2(g) + O2(g) Generally,evolution of heat in a reaction favours the conversion of reactants to produc