阅读理解。 Mike is a boy. He is seven years old. His birthday is September 9. He is 1.4 metres tall. He l

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阅读理解。

Mike is a boy. He is seven years old. His birthday is September 9. He is 1.4 metres tall. He lives in a house near the park. His address is 36 Park Road. He likes to read books on Sundays.

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某化学兴趣小组对粉体中碳酸钙含量进行了探究。小组成员从一包粉体产品中取出样品5．10g放入烧杯中，并逐滴加入相同浓度的稀盐酸(假设样品中的杂质不参与反应)，实验测得产生气体的质量与加入稀盐酸的总质量关系如下表所示。求：

稀盐酸的总质量(g)	10.00	20.00	30．00	40.00	50．00	60.00	70.00
产生气体的质量(g)	0.44	0.88	m	1.76	2.20	2.20	2.20

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