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drek231 [11]
3 years ago
13

A firecracker exploding would be an example of a (n) ___? A. Physical change B. Exothermic reaction C. Formation of a precipitat

e D. Endothermic reaction
Chemistry
2 answers:
irina [24]3 years ago
5 0
Exothermic because an explosion releases energy, and an exothermic reaction releases heat energy.
Jobisdone [24]3 years ago
3 0
The answer would be A) or the first option.
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True or false if an object displaces 50 ml of water the object's volume is 50mL
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Answer:

True

Explanation:

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kramer

Answer:

A

Explanation:

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Looking at the question asked, we have the element symbol in the correct position as Ca, with 42 also in the correct position which is the mass number. The third number which is 20 is thus the atomic number of the element.

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Explanation:

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