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17-06-2019
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Which statement best describes the two reactions?
A
B
Cl, + H2 → 2HCI
2H + H = He + in
Reaction A involves a greater change, and reaction B involves a change in element identity.
Reaction B involves a greater change and a change in element identity
Reaction A involves a greater change and a change in element identity.
Reaction B involves a greater change, and reaction A involves a change in element identity.

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20-06-2019

Answer:

Reaction B involves a greater change and a change in element identity.

Explanation:

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