PROPO407: Desermining the Molar Volume of Carbon Dienlde Pre-Laboratory Assignme

Question

PROPO407: Desermining the Molar Volume of Carbon Dienlde Pre-Laboratory Assignment 1. Briefl y describe the hazard you should be aware of when you work with dry ice. 2. A student determined the molar volume of CO2 gas He collected the following data using the Procedure described in this experiment. mass of flask, stopper, and air, g mass of flask, stopper, and COs.g volume of flask, L barometric pressure, in. Hg laboratory temperature, 'C density of air at 24.0 °C and 29.72 in. Hg, g/mL 108.812 108.892 0.144 29.72 24.0 1.189 × 10-3 (a) Convert the experimental barometric pressure to atmospheres (b) Convert the laboratory temperature to kelvins. (c) Calculate the volume, in liters, of the CO2 sample at STP.

Explanation / Answer

Question-1

Dy ice is the solid carbon dioxide, CO2. The higher concentration of CO2 will make an oxygen deficient atmosphere, which will result suffocation.

Question-2

a) 1 atm = 760 mmHg

therefore, 29.72 mmHg = 29.72/ 760 = 0.039105 atmosphere

b) laboratory temperature given = 24.0 0 C, so the temperature in kelvin scale = 24+273=297 K

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