Answer:
THE MASS OF THE SAMPLE IS 25.37 g
Explanation:
Using PV = m RT / Mm
P = 0.945 atm
V = 1550 mL = 1.55 L
R = 0.082
T = 50 C
m = unknown
Mm = molar mass = 35.5 * 2 = 71 g/mol
Re-arranging the formula by making m the subject of the equation, we have:
m = PV Mm / RT
m = 0.945 * 1.55 * 71 / 0.082 * 50
m = 103.99725 / 4.1
m = 25.37 g
The mass of the sample is therefore 25.37 g
