Answer:
The mass of sucrose in grams required to make 7% weight volume in 100 mL solution of water is 7g
Explanation:
The percentage weight of a solution is mostly referred to as percentage weight per volume (% w/v). The formula for this is
% w/v = g of solute/100 mL of solvent
sucrose is the solute here while water is the solvent. The mass (in grams) of the solute is the unknown
7% = g of solute/100 mL of water
where 7% equals/the same with 7/100;
7/100 = g of solute/100 mL of water
g of solute = 7 × 100/100
g of solute = 7 g
The mass of sucrose in grams required to make 7% weight volume in 100 mL solution of water is 7g
