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Aleks04 [339]
3 years ago
7

PCl3(g) + Cl2(g) ↔ PCl5(g) + energy. Some PCl3 and Cl2 are mixed in a container at 200 oC and the system reaches equilibrium acc

ording to the equation above. Which of the following causes an increase in the number of moles of PCl5 present at equilibrium?
Chemistry
1 answer:
anygoal [31]3 years ago
8 0

Answer: Chlorine Oxide

Explanation:

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Areas of the periodic table that contain elements that form cations in ionic compounds.
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Answer:

31.60% phosphorus

Explanation:

To find the percent by mass, you first calculate the total mass and then the mass of phosphorus, and finally divide phosphorus mass by total.

Phosphorus mass: the molar mass of P is 30.97 g/mol, and since there's 1 mole of P, we just have 30.97 g.

Total mass: we add all the molar masses of the components together.

We have 3 moles of H, so we multiply 3 by 1.008 g/mol = 3.024 g H.

We already calculated the mass of phosphorus: 30.97 g P.

We have 4 moles of O, so we multiply 4 by 16.00 g/mol = 64.00 g O.

The total is then the sum: 3.024 + 30.97 + 64.00 = 97.994 g ≈ 97.99 g

Now, to find the percentage, we take 30.97 g P and divide by 97.99:

30.97/97.99 ≈ 0.3160 ⇒ 31.60% P

Thus, the answer is 31.60% phosphorus.

Hope this helps!

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