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19 Nov 2019
Q1: At a pressure of 690 mmHg the volume changes from an initial volume 0.5 L to 5 L, calculate the work done in Joules (1 L.atm = 101.3 J).
Q2: Select the state functions
1. E 2. H 3. q 4. T
Q3: When a change of state from gas to liquid (condensation) takes place; X (g) -> X (l), the substance releases 350.1 J of heat energy and does 203.2 J of work on its surroundings. Calculate the change of E for this process.
Q4: Select the correct sign for the change of standard molar enthalpy of formation in a case of an endothermic process.
a) ïHf 0 > 0 (positive)
b) ïHf 0 < 0 (negative)
Q5: A silver (Ag) ring absorbs 8.15 J of energy with a temperature change of 15.0ï°K. The specific heat capacity of Ag is 0.233 J/g K. What is the mass of the ring?
Q1: At a pressure of 690 mmHg the volume changes from an initial volume 0.5 L to 5 L, calculate the work done in Joules (1 L.atm = 101.3 J).
Q2: Select the state functions
1. E 2. H 3. q 4. T
Q3: When a change of state from gas to liquid (condensation) takes place; X (g) -> X (l), the substance releases 350.1 J of heat energy and does 203.2 J of work on its surroundings. Calculate the change of E for this process.
Q4: Select the correct sign for the change of standard molar enthalpy of formation in a case of an endothermic process.
a) ïHf 0 > 0 (positive)
b) ïHf 0 < 0 (negative)
Q5: A silver (Ag) ring absorbs 8.15 J of energy with a temperature change of 15.0ï°K. The specific heat capacity of Ag is 0.233 J/g K. What is the mass of the ring?
Jamar FerryLv2
17 Apr 2019