[iiidroolmm]

I need help on this problem! I do not know what I am doing wrong... and if I don't get it right then we get points deducted on our lab. sad! please help if you can!! it looks fairly simple but I don't know why I'm not getting it..

Q. If the mass of sucrose you add to the beaker is 12.068 g, what volume of water must you add to make a solution that is 25.00% by weight sucrose? Assume the density of water is 1.000 g/mL.

I used the equation Density = Mass/ Volume, so I put 1 for the density and 12.068 for the mass. And then I put .25 in front of the V. My answer came out to be 48.272.... but it said that it was wrong. ARGH HELP

[esm90]

The answer you got is the mL of sucrose PLUS water, since percent mass is mass of solute over mass of solution (times 100%)

So subtract out 12.068 from that.

[iiidroolmm]

The answer you got is the mL of sucrose PLUS water, since percent mass is mass of solute over mass of solution (times 100%)

So subtract out 12.068 from that.

oooo wow thank you!! but sadly i only got like .4 out of .5 because of sig figs. omfg i hate sig figs. but thank you though!