Given Data

• 4 liters of water = 3.6 kg

• Maximum salt solubility = 357 g per liter of water

• Salt added = 4 kg

1?? Maximum salt that can dissolve in 4 liters of water

357 g × 4 = 1428 g = 1.428 kg

Salt that remains undissolved

4.000 − 1.428 = 2.572 kg (settles at the bottom)

Weight of the salt solution (water + dissolved salt):

3.6 kg (water) + 1.428 kg (dissolved salt)
= 5.028 kg

Undissolved salt:

2.572 kg

Total weight of the entire system (solution + solid salt):

3.6 kg + 4 kg
= 7.6 kg