Carcass wrote:
During an experiment, the pressure of a fixed mass of gas increased from 40 pounds per square inch (psi) to 50 psi. Throughout the experiment, the pressure, P psi, and the volume, V cubic inches, of the gas varied in such a way that the value of the product PV was constant.
Quantity A |
Quantity B |
The volume of the gas when the pressure was 40 psi |
1.2 times the volume of the gas when pressure was 50 psi |
We're told that the value of the product PV was
constantFor Quantity A, let's say the volume of gas is
k cubic inches
We know the pressure is 40 psi
So, PV = (40)(k) =
40k------------------------------
For Quantity B, we're told the pressure is 50 psi
Since PV is constant, we know that: (volume of gas)(50) =
40kSolve: volume of gas =
40k/50 =
0.8kQuantity B asks for 1.2 times the volume of gas.
We get: (1.2)(
0.8k) = 0.96k
-------------------------------
We have:
QUANTITY A:
kQUANTITY B: 0.96k
Answer: A
Cheers,
Brent
_________________
Brent Hanneson – Creator of greenlighttestprep.com
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