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Bumek [7]
3 years ago
9

The following chemical equation is unbalanced. When the equation is balanced, what is the coefficient for pure calcium (Ca)? A.

1 B. 2 C. 3 D. 4
Chemistry
2 answers:
erik [133]3 years ago
5 0
<span>3Ca + 2AlPO4 -> 2Al + Ca3(PO4)2 . . .the coefficient for Ca is 3.</span>
Eddi Din [679]3 years ago
5 0
The coefficient for Ca is 3.
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Answer:

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Explanation:

In this case, we need to apply the Gay-Lussack's law assuming that the volume of the container remains constant. If that's the case, then:

P₁/T₁ = P₂/T₂   (1)

From here, we can solve for the Pressure at 273 K:

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Now, all we need to do is replace the given data and solve for P₂:

P₂ = 340 * 273 / 713

<h2>P₂ = 130.18 kPa</h2>

Hope this helps

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