1. What is the %m/m if 12g silver is added to 50 g of gold to produce an jewelry?

2.The solution is made of adding 50.2mL of isopropyl to 72.3mL of water. What is the percentage by volume of isopropyl?

3.What is the volume of a 25% methyl solution that contains 20mL of methyl?

4.What is the percentage concentration in the following solution given 2g sucrose in 80g water?

5.What is the percent by mass concentration of a solution that contains 6.0g of sugar dissolved in 20.7g of water? ​