Answer:

Explanation:
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In this case, considering the given chemical reaction:

Thus, by applying the law of rate proportions, we can write:

Whereas the stoichiometric coefficients of reactants are negative due their disappearance and that of the product is positive due to its appearance. In such a way, when we relate the rate of disappearance of hydrogen gas to the rate of formation of hydrogen iodide, we obtain:

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7. 1,2,2,2
8. 4,3,1
9. 1,4,1,2
10. 3,4,1,4
I cannot see your question to help you... sorry
Answer: its 15 its none of those
Explanation:
75.7 grams.
Convert moles to grams using this:
Moles • grams/1 mole = grams
(Grams is over 1 mole)