In this week\'s experiment you will determine the molar mass of carbon dioxide b

Question

In this week's experiment you will determine the molar mass of carbon dioxide by measuring the mass of an Erlenmeyer flask full of the gas. The following calculations are intended to familiarize you with the general procedure:

The mass of an empty Erlenmeyer flask and stopper was determined to be 55.83 grams. When filled with distilled water, the mass was 294.8 grams. The atmospheric pressure was measured to be0.9337 atm, the room temperature was 20.00oC. At this temperature, the vapor pressure of water is 17.50 torr -- but assume a 50% relative humidity as outlined in the procedure for this experiment.

Explanation / Answer

A. Moles of air in the flask = mol

The mass of an empty Erlenmeyer flask and stopper was determined to be 55.83 grams. When filled with distilled water, the mass was 294.8 grams.

Therefore the water displaced x' amount of grams of CO2
294.8grams - 55.83grams = 238.97 grams of CO2

The molar conversion is 28.960g/mol ....
238.97g of = (1mol/28.960g ) = 8.25 mol of CO2

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.