1. The majority of chemical reactions are usually
accompanied by:
(a) absorption of energy only.
(b) either absorption or liberation of heat.
(c) either absorption or liberation of energy.
(d) liberation of heat only.
Answers
Answered by
3
Explanation:
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.
Answered by
6
Answer:
b. Liberation of heat only .
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