It is currently 21 Jul 2019, 19:32

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# During an experiment, the pressure of a fixed mass of gas in

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 7405
Followers: 125

Kudos [?]: 1451 [0], given: 6615

During an experiment, the pressure of a fixed mass of gas in [#permalink]  11 Jun 2019, 09:19
Expert's post
00:00

Question Stats:

71% (01:20) correct 28% (01:38) wrong based on 7 sessions
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

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

Practice Questions
Question: 4
Page: 81
[Reveal] Spoiler: OA

_________________
GRE Instructor
Joined: 10 Apr 2015
Posts: 2175
Followers: 65

Kudos [?]: 1989 [0], given: 20

Re: During an experiment, the pressure of a fixed mass of gas in [#permalink]  11 Jun 2019, 15:52
Expert's post
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 constant

For 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) = 40k
Solve: volume of gas = 40k/50 = 0.8k

Quantity B asks for 1.2 times the volume of gas.
We get: (1.2)(0.8k) = 0.96k
-------------------------------

We have:
QUANTITY A: k
QUANTITY B: 0.96k

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

Sign up for my free GRE Question of the Day emails

Re: During an experiment, the pressure of a fixed mass of gas in   [#permalink] 11 Jun 2019, 15:52
Display posts from previous: Sort by

# During an experiment, the pressure of a fixed mass of gas in

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.