Question 13 1 pts When heat is absorbed by the system and work is done by...
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61.6 J. b. 30.8 J. c. -61.6 J. d.-30.8 J. e. none of these 2. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P= 1 atm and T = 370 K? H2O(g) → H2O(1) a. q and w are negative. b. is positive, wis...
Marks: 1 When work is done on the system and heat is absorbed by the system, the sign on both work and heat are Choose one answer. A. work > 0 and heat > 0. B. work > 0 and heat < 0. C. work < 0 and heat > 0. D. work < 0 and heat < 0.
Consider each of the following processes and determine if work is done by the system, work is done on the system or no work is done. work done on the system N2 (1) N2 (9) work done by the system Ca3P2 (s) + 6 H20 (1) + 3 Ca(OH)2 (s) + 2 PH3 (9) work done by the system' 2 CH3OH (1) + 3 02 (9) 2 CO2 (9) + 4H20 (1) work done on the system 3 NO2 (9)...
A system absorbed 150j of heat. If there is 50j of work done by the system, What is the change in the intend energy?
Assume no heat is exchanged in the following scenarios. If the work done on a system by external forces is zero, the change in total energy of the system [ Select ] ["is positive", "is negative", "is zero", "cannot be determined without additional information"] . If the work done on a system by external forces is positive, the change in total energy of...
A system which does work on the surroundings with no heat change (i.e., q = 0) has: Ow=AU Ow=-AU w>0, AU < 0 O w<0, AU > 0 Ο w > Δυ Question 2 4 pts For the reaction: 2A + B2 -> 2AB AH = +50.0 kJ. The reaction is endothermic The bond energy for each A-B bond is 50.0 kJ The molecule AB contains less energy than A or B2 Heat is released to the surroundings
A. If a system has absorbed 48.62 Cal of heat and did 112.15 Joule of work to the surroundings, what is the change to the system's internal energy during the whole process?
If internal energy of a system is + 1250 J and 830 J of work is done by the system then what is the heat (in Joules) of the system. a. 2080 Ob.-2080 C. 420 d. -420 QUESTION 4 In which of the following case the energy of the system is always positive a. work is done on the system and heat is produced from the system b.work is done by the system and heat is produced from the system...
1. a) How much work is done by/on the system when is taken from point a to point b following the path indicated in the figure? b) How much heat is absorbed/released by the system when is taken from point a to point b following the path indicated in the figure? Express your answer in kJ c) What is the change in internal energy, ?U? Express your answer in kJ. 2. a) How much work is done on the system...
QUESTION 10 A system releases 7 J of heat. And the same time 12 J of work is done on the system by the surroundings. What is the AU? 05 -13) 8) 07) O-36) -131 QUESTION 11 A system absorbs 41 of heat. And the same time the system does 6 J of work on the surroundings. What is the AU? O-9) -39) 35 ) 11) 14 ) -15) QUESTION 12 A system absorbs 8J of heat. And the same...