Question

Calculate the number of moles and mass of nacl present in 200 ml of 0.5m solution

Answer 1

Answer:

Explanation:

1M means 1mole /1000mL .

0.3mole means 0.3mole/1000mL

0.3 moles of NaCl = 58.4x 0.3=17.52g of NaCl

1000mL water has 17.52 g NaCl

200mL water will need 17.52/1000 x 200=3.504g Nacl needs to be

dissolved in 200ml water . use chemical balance to maesure it