when u half the volume pressure INCREASES so it shifts to the side with the least GASEOUS MOLES which is the right (where ammonia is) therefore its concentration increases. So i think B
1)d
2)a
3)b
4)c
5)c
6)b
7)c
8)b
9)a
10)c
11)a
12)c
13)b
14)d
15)d
16)b
17)a
18)d
19)b
20)d
Those should get you 20/20
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