Help! Ideal Gas Laws?
I really need help with these equations, I've been trying forever to figure them out and still end up with the wrong answer, please explain to me on how to do these problems and how to set them up:
1) P=100 kpa
V=1500mL
n=500g Magnesium Carbonate
2) V=300L
n=250g NaCl
T=40 C
3) P=500 kpa
V=350 mL
T=75 C
4) n=700g Aluminum Phosphate at STP
5) P=400 kpa
V=70000mL
T= 80 F
6) P=800 kpa
V=300 dL
n= 80 mol
7) P=500 kpa
V=900 cL
T=55 C
8) n=500g of Iron (III) Oxide at STP
Update:I more so need to see the equations set up.
Answers & Comments
Verified answer
use P*V = n*R*T
rearrange accordingly (using math) to get the variable you need.
remember that R is a constant
remember to convert into similar units so that you can cancel them out
remember that units will cancel out properly to get what you need
STP = standard temperature and pressure = 25 degrees C at 1 atm but these given conditions will vary by where you are in the world since different countries define STP a little differently (i.e. your teacher might define it as 20 degrees C at 0.998 atm )