问题
填空题
给含盐率是10%的75克盐水中加入5克盐,全部溶解后,盐水的含盐率是______.
答案
75×10%=7.5(克);
(7.5+5)÷(75+5),
=12.5÷80,
=15.625%;
答:盐水的含盐率是15.625%.
故答案为:15.625.
给含盐率是10%的75克盐水中加入5克盐,全部溶解后,盐水的含盐率是______.
75×10%=7.5(克);
(7.5+5)÷(75+5),
=12.5÷80,
=15.625%;
答:盐水的含盐率是15.625%.
故答案为:15.625.