有無這個chemical reaction?

Dry calcium chloride reacts exothermically when exposed to water. Burns can result in the mouth and esophagus if humans or other animals ingest dry calcium chloride pellets. Small children are more susceptible than adults (who generally have had experience trying to eat hot food, and can react accordingly) so calcium chloride pellets should be kept out of their reach.

Since magnesium nitrate has a high affinity for water, heating the hexahydrate does not result in the dehydration of the salt. Instead, magnesium nitrate hexahydrate decomposes into magnesium oxide, oxygen, and nitrogen oxides.

You can see that both chemicals have reaction on water, so there will not have reaction on these two chemicals.

to 樓上:
both oxidizing agent 都可以react 的

應該無reaction, stable form

no reaction
in this case,both calcium chloride and magnesiun nitrate is oxidizing agent