1. <span>The phase change in which a substance changes from a liquid to a gas is condensation. The correct option among all the options given is option "c".
2. </span>The phase change in which a substance changes from a solid to a liquid is melting. The correct option among all the options given is option "b".
3. The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is sublimation. The correct option is option "a".
Answer:
154g/mol
Explanation:
the explanation is in the picture
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anything with plus or minus on them are ions
so that is 4 of them
po4-3
hco3-
al+3
hg2+2
