10) Which preparation produces a 2.0 M solution of Co H1206? [molecular mass = 180.0]
(A) 180.0 g of C6H12O6 dissolved in 1000. mL of
solution
(B) 90.0 g of C6H1206 dissolved in 1000. mL of
solution
(C) 180.0 g of C6H1206 dissolved in 500.0 mL of
solution
(D) 90.0 g of C6H1206 dissolved in 500.0 mL of
solution

(C) 180.0 g of C6H12O6 dissolved in 500.0 mL of solution

Explanation:

Molarity is mole/volume.

1. Find the mass of C6H12O6 in 1 Liter of 2.0 solution

(2 mol C6H12O6 / L) * (180 g / mol C6H12O6) = 360 g C6H12O6

There are 360 g C6H12O6 in 1000 mL of solution

2. Compare the value you found in step 1 to each of the multiple choice answers.

180.0 g of C6H12O6 dissolved in 500.0 mL of solution is exactly proportional to 360 g C6H12O6 in 1000 mL of solution.

law of conservation of matter