Answer:
Molar mass = 102.5 g/mol
Density = 4.19 g/L
Explanation:
To find the molar mass, we first need to find how many moles are in the sample. To do this, we can use the PV=nRT equation.
P = 600 torr * (1 atm/760 torr) = 0.79 atm
V = .1 L
n = this is the number of moles and what you are solving for
R = gas constant = 0.08206 L*atm/moles*K
T = 140 C + 273 = 413 K
Plug these values into the PV=nRT equation:
n = (.1 L*.79 atm)/(0.08206*413 K)/
n = .00233 moles
To find the molar mass divide the grams by the moles
0.239 g / .00233 moles = 102.5 g/mol
For the second part of the problem, you need to use this equation:
d (denstiy) = (P*molar mass)/ R*T
d = (1 atm * 102.5 g/mol) / (.08206*298 K)
d = 4.19 g/L
