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salantis [7]
3 years ago
15

In a college there are exactly 3000 students, exactly 60% are male. What is the number of female students

Chemistry
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

1800

Explanation:

3000x.60=1800

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the answer is 85.66

Explanation:

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2 years ago
Fill in the blank: After a chemical reaction, the atoms of the reactant _____ to form new products.
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The atoms of the reactant rearrange to form new products.
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If 125.0g of nitrogen is reacted with 125.0g of hydrogen, what is the theoretical yield of the reaction? What is the excess reac
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Answer:

Hydrogen is the excess reactant

Nitrogen is the limiting reactant

151.6g is theoretical yield

Explanation:

The reaction of N₂ with H₂ to produce NH₃ is:

N₂ + 3H₂ → 2NH₃

To find theoretical yield we need to determine limiting reactant with the moles of each gas as follows:

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Hydrogen -Molar mass: 2g/mol-

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For a complete reaction of 4.46 moles of N2 there are needed:

4.46 moles N2 * (3moles H2 / 1mol N2) = 13.38 moles of hydrogen

As there are 62.5 moles of hydrogen:

<h3>Hydrogen is the excess reactant</h3><h3>Nitrogen is the limiting reactant</h3><h3 />

With nitrogen, the limiting reactant, we determine theoretical moles (Assuming 100% of the reaction occurs) and theoretical yield (In mass):

4.46 moles N2 * (2moles NH3 / 1mol N2) = 8.92 moles of ammonia

As molar mass of ammonia is 17g/mol:

8.92 moles of ammonia * (17g/mol) =

<h3>151.6g is theoretical yield</h3>

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