Question

1.The pressure, P of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that particular amount of gas is initially at a pressure of 84 Pa at a volume of 36 L. If volume is expanded is expanded to 216, what will the new pressure be?
A.6 Pa
B.14 Pa
C.216 Pa***
D.504 Pa

Answer 1

This is Boyle's Law
P1*V1 = P2*V2
84 * 36 = P2 * 216
P2 = (84 * 36) / 216

Can you solve it from there?

Answer 2

Do the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table.
X ; 1 , 3 , 5 , 10
Y ; 4 , 12 , 20 , 40

A.direct variation; y=4x
B.direct variation; xy=1/4
C.inverse variation; xy=4
D.inverse variation; xy=1/4

Answer 3

@wolf1728 not really, I haven't learned how to solve these type of problems but I'll give it a try can you help with problem #2 as I do

Answer 4

Maybe this is helping a bit too much, but here is a Boyle's Law Calculator:
http://www.1728.org/boyle.htm

Answer 5

#1 is B 14Pa am I correct @wolf1728

Answer 6

Yes it is 14 Pascals

Answer 7

Can you please help me with #2. @wolf1738 its my last question

Answer 8

Sure it is pretty easy
For each value of y , check it against the corresponding value of X - see anything they have in common?