请参照情景一的编题方式，为情景二编写计算题，并为两题求解。（1）情景一：已知某种溶质的质量，把它配制成一定溶质质量分数的溶液。题目：小刚用15gNa

Question

请参照情景一的编题方式，为情景二编写计算题，并为两题求解。

 

 　　（1）情景一：已知某种溶质的质量，把它配制成一定溶质质量分数的溶液。
　 　题目：小刚用15 g NaCl晶体配制溶质质量分数为15%的NaCl溶液，需要加水的质量是多少？　　解：________________。
　　（2）情景二：配制某种溶质的一定溶质质量分数、一定质量的溶液。
　　题目：______________。　　解：________________。

Answer 1

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