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anastassius [24]
3 years ago
11

12.4 g of phosphorus reacts with 9.6 g of oxygen.

Chemistry
1 answer:
vaieri [72.5K]3 years ago
7 0

Answer:

D 4P +3O₂ → 2 P₂O₃

Explanation:

In this problem, we need to convert the mass of phosphorus and oxygen to moles trying to find the ratio of reaction (The moles of P that reacts per mole of O₂):

<em>Moles P:</em>

12.4g P * (1mol P / 31g) = 0.4 moles

<em>Moles O₂:</em>

9.6g * (1mol / 32g) = 0.3 moles

The ratio of reaction is:

0.4 mol / 0.3 mol = 1.33 = 4 moles of P / 3 moles of O₂

That means 4 moles of P react with 3 moles of O₂ and the reaction that represents this ratio is:

<h3>D 4P +3O₂ → 2 P₂O₃</h3>

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Answer:

26.9 L is the volume of CO₂, we obtained

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The reaction is: C₃H₈(g) + 5O₂(g)  →  3CO₂ (g) + 4H₂O (g)

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27.5 g . 1mol / 44 g = 0.625 moles

We need density of O₂ to determine mass and then, the moles.

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Let's find out the limiting reactant:

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Ratio is 5:3. 5 moles of O₂ produce 3 moles of CO₂

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3 years ago
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1. Stirring increases the rate of solution
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When a solute is added into a solvent and stirred, the solute particles get distributed to all parts of the solvent as a result of stirring.

More collisions occur between the solute and the solvent due to stirring. This increases the rate of dissolving.

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