Answer:
n = 0.157
Explanation:
To solve that question, we need to follow this equation: PV = nRT
V = 435ml (must be convert to L by ÷ by 1000) = 0.435 L
P = 6780 torr (must be convert to atm by ÷ by 760) = 8.92 atm
T = 28C (must convert to K by + 273.15) = 301.15 K
R = 0.08205
n = ?
PV = nRT
8.92 x 0.435 = n x 0.08205 x 301.15
3.88 = n x 24.7
Divided both sides by 24.7 (left n)
3.88/24.7 = n
0.157 = n
So 0.157 is the answer!
