Question

how do you solve for the combined gas law?..i ..I am very confused ..someone help by making it easier and clear since i am kinda slow..


ex.a sample of neon gas has a volume of 752ml at 25.0C. what will the volume at 50.0C be if pressure is constant

Answer 1

ahh i hate chemisty, i'm kindof slow too and everything confuses me in chem.!! i feel the same way as you:)

Answer 2

I just remember the combined gas law as one law; i.e.,
(P1V1)/T1= (P2V2)/T2
Since P is constant, just cover P1 and P2 and you are left with the expression of
V1/T1 = V2/T2
V1 = 752 mL
T1 = 25 C = 273 + 25 = 298 K
V2 = ??
T2 = 50 + 273 = 323 K
So
752/298 = V2/323
Cross multiply
298*V2 = 752*323
solve for V2
V2 = (752*323)/298 = 815.087 mL which rounds to 815 mL.

Answer 3

There is no reason to be confused. Just remember to use logic to think your way through problems.

Answer 4

thanxs sooo much i understand now, all i need is practice