Which solution of sugar in water has the highest molarity?

a.) 10g sugar in 250 mL of solution
b.) 20g sugar in 300 mL of solution
c.) 35g sugar in 500 mL of solution
d.) 60g sugar in 1L of solution

Question

Which solution of sugar in water has the highest molarity? 

a.) 10g sugar in 250 mL of solution 
b.) 20g sugar in 300 mL of solution 
c.) 35g sugar in 500 mL of solution 
d.) 60g sugar in 1L of solution

e.cociuba · Answer

I have to divide the grams by the mL to find out which one that has the highest molarity right?

mertsj · Answer

Molarity is moles per liter not grams per liter.

mertsj · Answer

So you could tell which one has the highest concentration by dividing grams by liters but it would not be molarity.

e.cociuba · Answer

Ok but molarity is the amount of concentration in a solution though..

mertsj · Answer

Yes.  That is true.

mertsj · Answer

But since all of these are sugar solutions, the one with the most grams per liter would also be the one with the most moles per liter.

e.cociuba · Answer

a.) .04 
b.) .0666666667 
c.) .07 
d.) .06 ??? (I think)  

This wat I got when i divided each..

e.cociuba · Answer

Isn't 1L----> 1000 mL ??

mertsj · Answer

Yes.  1 L is 1000 ml and what you have calculated is grams per milliliter

e.cociuba · Answer

Oh so I have to calculate grams per L??

mertsj · Answer

No.

mertsj · Answer

Did you understand what I said earlier?

e.cociuba · Answer

So it's d then?

mertsj · Answer

I said since are of these solutions are grams of sugar per milliliter of solution, the one with the most grams per milliliter or per liter would also be the one with the most moles per liter and so with have the highest molarity.

mertsj · Answer

No.  It is not D

e.cociuba · Answer

It's C.) then. Cuz thts the one tht was the highest when calculated.

mertsj · Answer

Yes.

e.cociuba · Answer

Oh ok I thought u were telling me at first tht I calculated everything wrong, but I miss understood. Thanks! :)