Question

will give medal
need help with two questions

Answer 1

43.
If a gas has a volume of 1 L at a pressure of 270 kPa, what volume will it have when the pressure is increased to 540 kPa? Assume the temperature and number of particles are constant. (1 point)
and
44.
How many grams of O2 are in 5.0 moles of the oxygen gas? (1 point)

Answer 2

still need a hand?

Answer 3

Yes please

Answer 4

have you heard of the ideal gas laws for your first question?

Answer 5

No I have not

Answer 6

How about Boyle's or Charles's Law?

Answer 7

I might have but I don't remember. I had fallen behind in some schoolwork due to family situations.

Answer 8

Boyle's Law states that if the temperature of an ideal gas remains constant, if the pressure increases, then its internal volume decreases, likewise a corresponding increase in volume must result in a decrease in pressure. Think of a balloon that is blown up. If you squeeze the balloon, its pressure will increase because you are trying to make it smaller. With me so far?

Answer 9

Yes

Answer 10

ok. Mathematically Boyle's Law is expressed as:
\[p _{1}v _{1} = p _{2}v _{2}\]
You know the volume of one gas as 1L. Of that same gas you know it has a pressure of 270 kPa. The second gas has a pressure of 540 kPa. You now only have to solve for the volume of the 2nd gas. Can you give that a try and see what you get?

Answer 11

I did figure it out. Thank you for the help