In a Battery,if the Following Oxidation-Reduction Reactions Takes Place Normally

question 70

Multiple Choice

In a battery,if the following oxidation-reduction reactions takes place normally: Mn₂O₃ + ZnO → 2 MnO₂ + Zn
What reaction would be taking place if you were charging the battery?

• A)2 MnO₂ + Zn → Mn₂O₃ + ZnO
• B)ZnO → Zn
• C)Mn₂O₃ → MnO₂
• D)all of the above
• E)none of the above

---

Definitions:

Profit Margin

A financial ratio, often expressed as a percentage, that compares a company's net income to its sales. It reveals how much profit a company makes for each dollar of its sales.

Sample Variances

The measure of spread within a sample dataset, calculated as the sum of squared deviations from the sample mean divided by the number of observations minus one.

Equal-variance T-test

A statistical method used to determine if there is a significant difference between the means of two groups which are assumed to have the same variance.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true.