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# Tutor profile: Eric E.

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Eric E.
Chemist
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## Questions

### Subject:Chemistry

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Question:

If you have hydrogen gas at 1 PSI in a 2-liter bottle and you compress the bottle to 1 liter, what pressure is the hydrogen gas exerting on the bottle assuming temperature is constant?

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Eric E.

2 PSI. Boyle's Law states that the pressure and volume of a gas have an inverse relationship, which means when the volume decreases, the pressure increases, and vice versa. This can also be expressed as P1V1 = P2V2. In this situation, P1 is 1 PSI, V1 is 2 liters, and V2 is 1 liter. We must solve for P2. P2 = P1V1/V2. P2 = 1*2/1 = 2 PSI.

### Subject:Basic Chemistry

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Question:

What is the chemical symbol for Lead?

Inactive
Eric E.

Pb

### Subject:Algebra

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Question:

Steve wants to plant a garden, but doesn't know how much chicken wire he should buy to surround the garden. The chicken wire comes in 3 foot segments. If the garden 10 feet wide and 22 feet long, how much chicken wire segments should he buy?

Inactive
Eric E.

3x = 10+10+22+22 3x = 64 x = 64/3 x = 21.33... or 22 segments. The left side of the equation is the amount of chicken wire (3 foot segments, x number) needed to surround the garden (perimeter 10+10+22+22, 64). If we divide our perimeter, 64 by the length of our segments, 3, we get the number of segments we need.

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