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horsena [70]
4 years ago
15

I need an answer ASAP!!

Chemistry
1 answer:
dimaraw [331]4 years ago
8 0

Answer:

C:

Explanation:

Current flows from negative to positive.So the electrons will be moving left.

when a current is applied, positive charged copper ions (called cations) leave the anode (positive electrode) and move to the cathode (negative electrode).

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<em>Dimensional analysis</em>

\begin{array}{lll}n & = & m / M \\ & = & 8.33 \; \text{g H} / (1.008 \; \text{g H} \cdot\text{mol H}^{-1})\\ & = & 8.26 \; \text{mol H}\end{array}

\begin{array}{lll} N & = & n \cdot A_r \\ & = & 8.26 \; \text{mol H} \times 6.023 \times 10^{23} \; \text{mol}^{-1} \\ &= & 4.93 \times 10^{24} \; \text{H atoms}\end{array}

\begin{array}{lll}N & = & n \cdot A_r \\ & = & 0.417 \; \text{mol O}\times 6.02 \times 10^{23} \; \text{mol}^{-1} \\ & = &2.51 \times 10^{23} \; \text{O atoms}\end{array}

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