in 3.2 liters of an aqueous solution which was 0.0066 M with

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in 3.2 liters of an aqueous solution which was 0.0066 M with respect to CaCl2 and 0.5 M with regard to NaCl.
每3.2升水溶解0.0066 M 氯化钙和0.5 M 氯化钠,其中的M 是什么单位,换成克是多少

在3.2升水溶液中溶有0.0066 M 的氯化钙和0.5 M 的氯化钠.
其中的M 是物质的量浓度,也叫摩尔浓度,单位是mol/L;
CaCl2的质量= 0.0066 *3.2*111 =2.344克;
NaCl的质量= 0.5 *3.2*58.5 = 93.6克;
111是CaCl2的摩尔质量,58.5是NaCl的摩尔质量.

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