Page 1 of 1
Chemisty Combination Gas LAw
Posted: Mon Oct 10, 2016 9:45 am
by deleted-390521
A 600 mL sample of krypton is held at standard conditions. What volume does the gas occupy when the pressure is tripled and the temperature doubles?
Answer and how do you solve?
what LAw
Re: Chemisty Combination Gas LAw
Posted: Wed Oct 19, 2016 4:49 pm
by deleted-289675
Please keep in mind that this forum is meant for inquiries about science fair projects; it is not for homework help. I will answer your question for now but make sure that in the future you refer to a science fair project in your posts.
Remember PV = nRT?
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = universal gas constant = 0.08206 (L*atm)/(mol*K)
T = temperature (K)
Standard conditions mean that pressure is 1.0 atm (it's actually a bit less but this value should work for our purposes) and temperature is 273.15 K. To find the number of moles, you can use the rule that for any gas at STP, 1 mole takes up 22.4 L. From this information, you already know all the components of the starting equation.
Now with the values you have, you can triple the pressure and double the temperature. Then solve for volume using algebra.
Hope this helps!
-Karen