1) Energy that is associated with the motion of an object is called A) kinetic e
ID: 587875 • Letter: 1
Question
1) Energy that is associated with the motion of an object is called A) kinetic energy B) thermal energy C) potential energy D) chemical energy 2) Caleulate the change internal energy (AE) for a system that is giving off 622 J ofheat and is performing 10%) of work on the surroundings. A) 64.1 kJ B)-74.1 kJ C)-7.27k D)7.00 x 102 kJ E) -9.00 x 102 3) Is Ag paramagnetic or diamagnctic? A) Diamagnetic B) Paramagnetic C) None of the above 4) Give the ground state electron configuration for Br A)Arj4s23d104p6 B)[Ar4s23d104p C)[Ar]4s24p D) [Ar)4s24d104p6 5) Determine whether isopropyl alcohol evaporating form skin is exothermic or endothermic? A) Exothermic B) Endothermic 6) Define specific heat capacity A) the quantity of heat required to raise the temperature of mole of a substance by 1 B) the quantity of heat required to change a system's temperature by 1 C) the quantity of heat required to raise the temperature of 1 gram of a substance by-F D) the quantity of heat required to raise the temperature of 1 liter of a substance by 1°C E) the quantity of heat required to raise the temperature of 1 gram of a substance by 1 7) Identify what a coffee cup calorimeter measures A) measures H for aqueous solutions B) measures AE for combustion reactions C) measures H for oxidation solutions D) measures for hydrolysis solutions E) measures AE for reduction reactions 8) Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as gaining heat from the surroundings? E) None of these represent the system referenced above.Explanation / Answer
1)
motion is also called kinetics and this energy associated is called kinetic energy
Answer: A
2)
Q = -622 KJ (Since system releases heat)
W = - 105 KJ (Since system is doing work)
use:
delta E = Q + W
= -622 KJ - 105 KJ
= -727 KJ
Answer: -727 KJ
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