2. What is the work done for the change in volume of a gas of 17L at a constant pressure of 12 atm?
100 J 204 J -204 J 347 J -347 J
3. Which statement concerning Hess's Law is FALSE?
the change in enthalpy is the same regardless of the number of steps DH is also reversed">if reaction is reversed, the sign of DH is also reversed DH is directly proportional to the quantities of reactants and products in a reaction">the magnitude of DH is directly proportional to the quantities of reactants and products in a reaction DH indicates the direction of heat flow">the sign of DH indicates the direction of heat flow all statements are true
4. 300. J of energy was released by solution A in a calorimeter. If the mass of solution A was 50.g and the T was 30.°C, what is its specific heat capacity.
.20 J/°C*g 20 J/°C*g 1.2 J/°C*g .7 J/°C*g none of the above
5. Which of the following do NOT contribute to the formation of coal?
bones plants computer chip a humpback whale a banana peel
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