4. How do minerals become part of the soil?
2 answers:
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Answer: 34.4 g
Explanation:
As is in excess,
is the limiting reagent and thus it will limit the formation of products.
According to stoichiometry:
2 moles of hydrogen produce = 1 mole of
2.5 moles of hydrogen produce = of
Mass of
But as % yield is 86%, mass of produded is
Thus 34.4 g of is produced.
Since we are already given the balanced equation:
→
We can derive the molar ratios as: 1:2:1:1
That being said, we are given 0.172 moles of bromine (), so it has a ratio of 1:1 with sodium bromide (
).
So we can take from that ratio, that when 0.172 moles of bromine are used, we are, in turn, going to get 0.172 moles of sodium bromide produced.