问题
填空题
ag三价金属M与稀硫酸完全反应生成硫酸盐和bg氢气，则M的相对原子质量为______．
答案
假设金属M的相对原子质量为Ar（M）；
2M+3H2SO4=M2（SO4）3+3H2↑
2Ar（M） 6
ag bg
=2Ar(M) 6 ag bg
解之得Ar（M）=3a b
故答案为：3a b
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ag三价金属M与稀硫酸完全反应生成硫酸盐和bg氢气，则M的相对原子质量为______．
假设金属M的相对原子质量为Ar（M）；
2M+3H2SO4=M2（SO4）3+3H2↑
2Ar（M） 6
ag bg
=2Ar(M) 6 ag bg
解之得Ar（M）=3a b
故答案为：3a b
| 完形填空。 | ||||
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