<span>The Answer would be </span><span>A)The concentration cannot be increased.</span><span> </span>
Answer:
H2(g)+I2(s)→2HI(s)
Explanation:
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In this case, according to the given information and unbalanced chemical reaction, we infer it must be balanced in agreement with the law of conservation of mass because the reactants side has two hydrogen and iodine atoms whereas the products side has just one. In such a way, by placing a 2 on HI, we obtain the following balanced reaction:
H2(g)+I2(s)→2HI(s)
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18. c
19. A
20. decomposition reaction
21. 4
22. 0.04%
D. With the same number of protons and different number of neutrons.