Question

Suppose you want to make 2000g of a solution of glucose in water that has
2.8% (m/m) concentration. How much glucose should you use?​

Answer 1

Answer:

56 g of glucose

Explanation:

We can find the mass of glucose used as follows:

$\%_{m/m} = \frac{m_{s}}{m_{sol}}\times 100$   (1)

Where:

$m_{s}$ is the solute's mass =?    

$m_{sol}$ is the solution's mass = 2000 g  

% (m/m)= 2.8 %

By solving equation (1) for $m_{s}$ we have:

$m_{s} = \frac{\%_{m/m}*m_{sol}}{100} = \frac{2.8*2000 g}{100} = 56 g$

Therefore, you used 56 g of glucose to make 2000 g of a solution of glucose in water.

I hope it helps you!