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2 years ago

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given the following reaction: CuO (s) + H2 (g) to Cu(s) + H2O (g). If 250 L of hydrogen gas are used to reduce copper (II) oxide

at STP, what mass of copper is to be expected?

1 answer:

QveST [7]2 years ago

4 0

24g is needed no explanation

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Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt

oksian1 [2.3K]

Answer:

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Explanation:

<u>Step 1:</u> Data given

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<u>Step 2:</u> Balance both equations

2*(Al → Al3+-3e−) E∘=1.66 V

3*(Cu2++2e−→Cu) E∘=0.340 V

<u>Step 3:</u> The netto equation

2 Al + 3Cu2+ +6e- → 2Al3+ + 3Cu -6e-

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E∘cell = E∘cathode - E∘anode

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E∘cell =0.340 V - (-1.66) = 2.00 V

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Answer:

Following are the solution to these question:

Explanation:

Calculating the mean:

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Calculating the standardn:

$\sigma=\sqrt{\frac{\Sigma(x_i-\bar{x})^2}{n-1}}\\\\$

Please find the correct equation in the attached file.

$=28.195$

For point a:

$=3s+yblank \\\\=3 \times 28.195+50\\\\=84.585+50\\\\=134.585\\$

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