2. 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?
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%
