question 1
Suppose two moles of a certain gas undergo a transformation as shown in the graph below the pressure vs. temperature. The universal gas constant R = 8.31 J/mol. K, molar heat at constant volume Cv = 4 cal/mol. K and the mechanical equivalent 1 cal = 4.18 J, determine the change in internal energy and mark the correct alternative.
a) 8,866 J
b) 4,433 J
c) 6,975 J
d) 3,500 J
e) 6,688 J
question 2
A given gaseous mass undergoes an isothermal transformation, as shown in the diagram, and receives 2000 J from the external environment in the form of heat. Given the universal gas constant R = 8.31 J/mol. K, respectively determine the Final Volume, a internal energy variation it's the work done by gas and mark the correct alternative.
a) 0.04 m3, 200 J, 100 J
b) 0.04 m3, 10J, 5J
c) 0.04 m3, 0 J, 3200 J
d) 0.04 m3, 0 J, 2000 J
e) 0.04 m3, 200 J, 200 J
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