chemistry
posted by katie .
a 36.o% Aqueous solution of sucrose has a density of 1.16g/mL.What mass of sucrose is in 500mL of this solution?

chemistry 
DrBob222
mass = density x volume
1 L of the solution has a mass of
1000 mL x 1.16 g/mL = 1160 grams.
How much of that is sucrose. 36%, therefore,
1160 x 0.36 = grams sucrose in 1,000 mL.
So how much is in 500 mL 
chemistry 
katie
so how do you do this one..i get it a little bit

chemistry 
DrBob222
If I told you that we had 418 apples in a barrel (must be a big barrel), then how much would there be in 1/2 a barrel?
If there are 418 (you need to multiply to find how many grams are there) in 1000 mL, how many grams would there be in 500 mL? 
chemistry 
katie
so i times them??

chemistry 
DrBob222
You have 417.6 grams of sucrose in 1000 mL. How much do you have in 500 mL (half the 1000)? Did you times them to find the number of apples in half a barrel?

chemistry 
katie
well if you times them its 500000..

chemistry 
DrBob222
I have 417.6 grams in 1000 mL. I will have EXACTLY half that amount in 500 mL (which is just 1/2 of the 1000). So 417.6 g x (1/2) = ?? grams sucrose OR
417.6 g/2 = ?? grams sucrose. . 
chemistry 
katie
which is 208.8

chemistry 
DrBob222
right.
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