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Given the unbalanced reaction: P₄+ O₂ [tex]\rightarrow[/tex] P₄O₁₀ How many moles of O₂ are needed to produce 14.2 grams of P₄O₁₀­?
a. 0.125 mol
b. 0.0620 mol
c. 0.500 mol
d. 0.0500 mol
e. 0.250 mol

Respuesta :

Answer:

The correct answer is option e.

Explanation:

[tex]P_4+ 5O_2 \rightarrow P_4O_{10}[/tex]

Moles of phosphorus pent-oxide :

[tex]\frac{14.2 g}{284 g/mol}=0.05 mol[/tex]

According to reaction, 1 mole of phosphorus pent-oxide is obtained from 5 moles of oxygen gas.

Then 0.05 mole of  phosphorus pent-oxide will be obtained from:

[tex]\frac{5}{1}\times 0.05 mol=0.25 mol[/tex]

Hence,the correct answer is option e.

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