侯英超 | 发布日期:2013-12-08 14:40:09
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锌粉、铝粉、铁粉、镁粉的混合物a克与一定质量的质量分数为25%的稀硫酸恰好完全反应,蒸发水分后得到固体c(不含结晶水)b克。求反应过程中生成氢气多少克? |
花季~雨季 |
发布日期:2013-12-08 22:40:34
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