A.1 :1 | B.1 :2 | C.2 :1 | D.4 :1 |
A.甲 | B.乙 | C.丙 | D.丁 |
A.3A+B 2C | B.2A+2B 3C | C.A+B C | D.A+3B 2C |
A.60°C,将0.1mol 镁粉加入到10mL 3mol·L-1的硝酸溶液中 |
B.60°C,将0.1mol 镁粉加入到10mL 3mol ·L-1的盐酸溶液中 |
C.60°C,将0.1mol 铁粉加入到10mL 3mol ·L-1的盐酸溶液中 |
D.30°C,将0.1mol 镁粉加入到10mL 3mol ·L-1的硫酸溶液中 |
A.10s | B.大于10s | C.小于10s | D.无法判断 |
A.2A+3B="2C" | B.A+3B="2C" | C.3A+B="2C" | D.A+B=C |
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