a sample of benezene C6H6 weighing 3.51g was burned in an excess of
oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00C to 37.1/C. If the heat capacity of the calorimeter and contest was 12.05 Kj/C, what is the value of q for burning 1.25 mol of benezene?
If you know the mass, volume, temperature, and pressure of a gas, you can determine it’s identity. For example, assuming conditions of standard temperature and pressure (STP), if you have a sample of a noble gas that weighs 52.71 g, in a container with a volume of 14.09 L, which noble gas is it? (R= 0.0821 L atm/ mol K)
A.Ar
B.Ne
C.Kr
D.He
E.not enough information
One term associated with these types of molecules is “globular shape.” With what type of protein structure is this associated?
A.Primary Structure
B.Secondary Structure
C.Tertiary Structure
D.Quaternary Structure
E.Pental Structure
1. A vessel with a volume of 23.1 L contains 2.80g of nitrogen gas,
0.403 g of Hydrogen gas, and 79.9g of Argon gas. At 25 degrees C, what is the pressure in the vessel?
2. What volume will be required to contain a mixture of 0.232 mol of N2 and .232 mol of O2 at 1.04 atm and 47.7 degrees C?
3. An unknown gaseous hydrocarbon consists of 85.63% carbon by mass. A 0.514 g sample of the gas occupies 0.274L at STP. What is the identity of the gas?
A. CH2
B. C4H8
C. C2H4
D. C3H6
E. C5H10
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