I had checked the last two options and the answer was wrong. The message said Th

Question

I had checked the last two options and the answer was wrong. The message said That the options I picked were the work done on the SYSTEM and NIT THE SURROUNDINDS.
Please help me understand how to figure how to figure that work is done in system vs. surrounding.
Also how to determine if work >0, W<0 etc.
Jump to... o 2/26/201 8 11:cc r:.: 60.7/70 O 2/25/2018 07:24 PM - Print Calculator Periodic Table Question 6 of 12 lrecl IncorrectIncorrect Sapling Learning At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A(g) + Big) 4C(g) A(s) + Bis) C(g) 2A(g) + Big)-> C(g) A(g) + Big)-> C(g)

Explanation / Answer

System will do work on surrounding when system expands.
System will expand when there are more gases on product than reactant

option 1 has more gas on product side
option 2 has more gas on product side
option 3 has less gas on product side
option 4 has less gas on product side

Answer: option 1 and 2

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