# Tutor profile: Mackenzie G.

## Questions

### Subject: Chemistry

Balance the following chemical equation with the proper numerical coefficients: ___Au2S3 + ___H2 > ___Au + ___H2S

1 Au2S3 + 3H2 > 2Au + 3H2S

### Subject: Biology

In the cellular process of mitosis, what is the second main phase called? Describe the events that occur in the phase as well.

The second phase in mitosis is called metaphase, and is the phase in which the chromosomes align in the middle of the cell to prepare for the division into two daughter cells.

### Subject: Algebra

What is the value of x in the equation (x-5)/2 + 7 = 28. Show how you get your answer.

The first step is to subtract 7 from each side to obtain (x-5)/2 = 21. Then, multiply each side by 2 to get rid of the fraction on the left side: x-5 = 42. The final step is to add 5 to each side to get the value of x: x = 47.

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