How many grams of sucrose are in 1.5kg of a 10.5% (by mass) solution of sucrose?
10.5% w/w means 10.5 g sucrose in 100 g solution. So how much is in 1,500 g solution?
(g solute/g solution)*100 = %
(g solute/1500)*100 = 10.5
Solve for g solute.
2. How many grams of sucrose would be needed to prepare 100.mL of a solution of 0.10 M sucrose? Show your calculations.
To determine the number of grams of sucrose in the solution, we need to calculate the amount of sucrose as a fraction of the total mass.
1. First, convert the given mass of the solution to grams.
1.5 kg = 1500 grams
2. Next, calculate the percentage of sucrose in the solution.
10.5% = 10.5/100 = 0.105 (decimal form)
3. To find the grams of sucrose, multiply the total mass of the solution by the percentage of sucrose.
1500 grams × 0.105 = 157.5 grams
Therefore, there are 157.5 grams of sucrose in 1.5 kg of a 10.5% solution of sucrose.