start of experiments mass of 250-mL Erlenmeyer flask 78.639 g mass of 250-mL Erl
ID: 817408 • Letter: S
Question
start of experiments mass of 250-mL Erlenmeyer flask 78.639 g mass of 250-mL Erlenmeyer flask and water 327.039 1. student removed the 250-mL Erlenmeyer flask containing the gas vapor to let it cool to room temp. when the gas had completely condensed, he weighted the flask and the liquid mass of 250-mL Erlenmeyer flask and liquid 79.118g a. what is the mass of the liquid in the flask? b. what is the molar mass of the unknown liquid in g/mole?start of experiments mass of 250-mL Erlenmeyer flask 78.639 g mass of 250-mL Erlenmeyer flask and water 327.039 1. student removed the 250-mL Erlenmeyer flask containing the gas vapor to let it cool to room temp. when the gas had completely condensed, he weighted the flask and the liquid mass of 250-mL Erlenmeyer flask and liquid 79.118g a. what is the mass of the liquid in the flask? b. what is the molar mass of the unknown liquid in g/mole?
Explanation / Answer
mass of water = exact volume which can be occupied = 327.039 - 78.639 = 248.4 mL
Mass of liquid = 79.118 - 78.639 = 0.479g
Molar volume of ideal gas at 25C = 24.465L
Molar mass of the gas condensed to liquid = 0.479/248.4*24465 = 47.17g
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.