Question

What mass, in grams, of chlorine gas (Cl2) is contained in a 15.5 liter tank at 25.5 degrees Celsius and 1.98 atmospheres? Show all of the work used to solve this problem.

Answer 1

alright i'll give you the formula
PV=nRT

Answer 2

Can you check if I have the substitutions correct?
(P)= 1.0 atm
(V)= 22.4L
(n)= ??
(R)= ?
(T)= 298.65 K

Answer 3

just a sec* brb ok?

Answer 4

Ok :)

Answer 5

22.4 L??

Answer 6

its 15.5 L tho

Answer 7

stp number or something like that? never mind I guess I got confused in that part.

Answer 8

yeah u got a bit

Answer 9

from your question
(P)= 1.98 atm
(V)= 15.5 L
(n)= ??
(R)= ?
(T)= 298.5 K

Answer 10

R is constant value which is 8.31

Answer 11

so it'll always be 8.31?

Answer 12

yes

Answer 13

when you use PV=nRT
i'll tell u needed units
P= Pa
V= m3
n= mole
R= constant 8.31
T= K

Answer 14

so convert units where needed

Answer 15

So P would be 101325?

Answer 16

yes that 1atm = 101325Pa , and you are give 1.98 atm

Answer 17

So it's 200623.5 and V is 0.0155m3

Answer 18

good :)

Answer 19

now make n as subject and find it
n is mole btw

Answer 20

I got 1.25 for n

Answer 21

alright let me check

Answer 22

thats right)

Answer 23

:D is that all to be done for this equation?

Answer 24

yes

Answer 25

now main part of the question
its asking for mass right?

Answer 26

Yeah

Answer 27

Do I use molarity or mass % formula?

Answer 28

u know mole formula right?

Answer 29

isn't it n = mass /Molar mass

Answer 30

yup :)

Answer 31

so find mass
u have Molar mass

Answer 32

and u have mole

Answer 33

so mass is 88.6 g

Answer 34

88.75g

Answer 35

right basically :) good job)

Answer 36

Thank you for your help. I'm really starting to understand these questions. I just have trouble understand how to set them up.

Answer 37

yeah i see it :)) keep it up))