Обчисліть масу цукру та води необхідні для приготування 500 г розчину з масовою часткою розчиненої речовини 40 %

Ithink carbon dioxide, i am not completely sure.tell me if i am wrong.

Using dilution equationm1v1 =m2v2 ; where m1 and m1 are the intiial and final concentration, and v1 and v2 are the initial and final volume.5  × 5 m = 8 l  × m2m2 = 25/8 = 3.125 mtherefore; the resulting molarity is 3.125 m

The independent is what is changed, the dependent is was is measured or the reaction.