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【单选题】
---What do you think of the game show?---________.
A.
I’d love to
B.
I think so
C.
I love it
D.
That’s nothing
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A.
△[NH 3 ] / 2△t
B.
- △[NH 3 ] /2 △t
C.
- 2△[NH 3 ] / △t
D.
2△[NH 3 ] / △t
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【单选题】反应3H 2 (g)+N 2 (g)=2NH3(g)的化学平衡常数的表达式是()
A.
K=[NH 3 ]/([N 2 ][H 2 ])
B.
K=[NH 3 ] 2 /([N 2 ][H 2 ])
C.
K=[NH 3 ] 2 /([N 2 ][H 2 ] 3 )
D.
K=([N 2 ][H 2 ] 3 )/[NH 3 ] 2
E.
K=([N 2 ][H 2 ])/[NH 3 ]
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【单选题】N 2 (g) + 3H 2 (g) == 2NH 3 (g) 反应前 n 1 ( mol ) 4 9 0 反应某时刻 n 2 ( mol ) 2 3 2 ξ=?
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1mol
B.
2mol
C.
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are; he
B.
are; him
C.
is; him
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is; his
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【单选题】对反应 3H 2 (g) + N 2 (g) → 2NH 3 (g) 来说,当用 -△[N 2 ] / △t 表示其反应速率时,与此 相当的是( )。
A.
△[NH 3 ] / 2△t
B.
- △[NH 3 ] /2 △t
C.
- 2△[NH 3 ] / △t
D.
2△[NH 3 ] / △t
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【单选题】反应3H 2 (g)+N 2 (g)=2NH3(g)的化学平衡常数的表达式是()
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B.
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【单选题】N 2 (g) + 3H 2 (g) == 2NH 3 (g) 反应前 n 1 ( mol ) 4 9 0 反应某时刻 n 2 ( mol ) 2 3 2 ξ=?
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are; he
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are; him
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is; him
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