2 grams of salt are dissolved in 20 grams of water. How much will the mixture weigh?

22g

When u make a solution, the solute doesn't go away. All the solute u use stays in the solution.

The total mass of solution is always equal to the mass of solvent added to the mass of solvent added to the mass of solute.
So,
2+20=22

To find out how much the mixture will weigh, you need to add the weight of the salt to the weight of the water.

In the given scenario, 2 grams of salt are dissolved in 20 grams of water.

So, the weight of the mixture will be 2 grams (salt) + 20 grams (water) = 22 grams.

Therefore, the mixture will weigh 22 grams.

2g+20g=22g