Answer:
B
Explanation:
energy needed to get a reaction started
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Adhesives twenty characters.
Sodium Carbonate(NaCO3) gives off heat hence the reactions involving Na2CO3 are exothermic.
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When it switches to a lower orbital, the atom emits energy in the form of photons. Your answer is C.
Answer:
Dissolving a salt of a weak acid or base in water is an example of a hydrolysis reaction. Strong acids may also be hydrolyzed. For example, dissolving sulfuric acid in water yields hydronium and bisulfate.
Explanation: