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Aloiza [94]
3 years ago
10

How many moles of tungsten carbide will be produced if plenty of tungsten is reacted with 1.25 moles of carbon?

Chemistry
1 answer:
Tanya [424]3 years ago
8 0

Answer:

1.25 moles of tungsten carbide

Explanation:

Tungsten carbide, WC, is a substance that is produced prom carbon and tungsten as follows:

W + C → WC

Based on the reaction, 1 mole of Carbon produce 1 mole of tungsten carbide. That means if 1.25 moles of carbon are added in excess of tungsten, the moles of tungsten carbide produced are:

<h3>1.25 moles of tungsten carbide</h3>
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The combustion of propane may be described by the chemical equation C 3 H 8 ( g ) + 5 O 2 ( g ) ⟶ 3 CO 2 ( g ) + 4 H 2 O ( g ) C
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Answer: 72 grams of O_2(g) are needed to completely burn 19.7 g C_3H_8(g)

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According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the number of moles, we use the equation:

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Putting in the values we get:

\text{Number of moles}=\frac{19.7g}{44g/mol}=0.45moles

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According to stoichiometry:

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72 grams of O_2(g) are needed to completely burn 19.7 g C_3H_8(g)

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Answer:

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