50g质量分数为36.5%的盐酸与30g大理石恰好完全反应(大理石中的杂

 50g质量分数为365%的盐酸与30g大理石恰好完全反应(大理石中的杂质不参加反应)。

1)计算反应生成二氧化碳气体的质量。

2)计算该大理石中碳酸钙的质量分数。

答案

大理石中碳酸钙的质量分数为               ×100%83.3%   ···········1

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