Question

which is more concentrated a solution containing 5 grams of salt in 10 grams of water or a solution containing 18 grams of salt in 90 grams of water​

Answer 1

The solution containing 5g of salt in 10g of water has a higher concentration.

In computing percentage concentrations, the formula [weight of solute/ weight of solution]*100% may be used since the given values are expressed in grams.

Solution:

Problem no.1

Given: 5g of salt

           10g of water

using the formula:   [5g of salt/10g of water]*100%= 50%

Problem no.2

Given: 18g of salt

           90g of water

using the formula:  [18g of salt/90g of water]*100%= 20%