**determine the mass of nacl and mass water required to ,ale 2.50 kg of 7.00% salt solution**

**Answer:**

100 kg of solution have 7 kg of salt.

so 2.5 kg of solution will have 0.07*2.5=0.175 g of salt i.e mass of NaCl. and rest 2.5-0.175=2.325 is the mass of Water.