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chem 2 final

QuestionAnswer
To what temperature must a balloon, initially at 25°C and 2.00 L, be heated in order to have a volume of 6.00 L? b894 K
What is the volume of 0.700 mol of neon gas at a pressure of 609.5 mm Hg and 117°C? a 27.9 L
Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the following reaction. The molar mass for KClO3 is 122.55 g/mol. a 13.7 L
Calculate the root mean square velocity of nitrogen molecules at 25°C. Note: make sure your units cancel out! a 515 m/s
The rate of effusion of oxygen to an unknown gas is 0.935. What is the other gas? Hint: use the formula weight of the unknown gas to determine its identity. Choose the gas with the closest formula weight. c N2
The vapor pressure of dichloromethane is measured as a function of temperature, and the following results are obtained (see table below). Determine the heat of vaporization of dichloromethane. The data has been graphed for you and the slope is shown... Death Valley, 282 feet below sea level
Identify the place which has the highest boiling point of water. d 5.1 atm, -56.7 °C
What is the strongest type of intermolecular force present in CH2F2? b dipole-dipole
Determine Hvap for a compound that has a measured vapor pressure of 24.3 torr at 273 K and 135 torr at 325 K. e 24 kJ/mol
Consider the phase diagram shown. What is the triple point? b 5.1 atm, -56.7 °C
Created by: cmora
 

 



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