Question

You have a 70% solution of dextrose. how many grams of dextrose are in 400 ml of this solution?

Answer 1

70% solution means there are 70 g in 100 mL.

so all you have to do is set up a proportion and solve for x:

70 g/100 mL = x g/75 mL

52.5 g = x

Answer 2

Answer: The mass of dextrose present in 400 mL of solution is 280 g.

Explanation:

It is given that 70 % of the solution contains dextrose. This means that 70 grams of dextrose is present in 100 mL of solution.

We need to find the amount of dextrose present in 400 mL of solution.

If in 100 mL of solution, 70 grams of dextrose is present.

So, in 400 mL, the amount of dextrose present will be = $\frac{70g}{100mL}\times 400mL=280g$

Hence, the mass of dextrose present in 400 mL of solution is 280 g.