Chapter 9, Problem 4QAP

hich of the following statements is true for the reaction of nitrogen gas with hydrogen gas to produce ammonia $\left({\text{NH}}_3\right)$? Choose the best answer.

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Subscripts can be changed to balance this equation, just as they can he changed to balance the charges when writing the formula for an ionic compound.

i>The nitrogen and hydrogen will not react until you have added the correct mole ratios.

i>The mole ratio of nitrogen to hydrogen in the balanced equation is 1:2.

i>Ammonia will not form unless 1 mole of nitrogen and 3 moles of hydrogen have been added.

i>The balanced equation allows you to predict how much ammonia you will make based on the amount of nitrogen and hydrogen present.