You have a 70% solution of dextrose. how many grams of dextrose are in 500 ml of this solution?

350g dextrose

Explanation:

To calculate how many g of dextrose are in 500ml of solution we have to know the following:

When we talk about x% m/v (mass / volume) it means that there are x grams of solute in 100 ml of solution. Then 70% means that there is 70g of dextrose per 100ml of solution.

To solve this we can say that if in 100 ml there are 70g. How many grams are in 500 ml?

We apply the simple three rule and solve:

   100ml > 70g dextrose

   500ml> X g dextrose

500ml x 70g / 100ml = X

                         350g = X

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