If you mix 20.0 mL of a 3.00 M sugar solution with 30.0 mL of a 5.57 M sugar solution, you will end up with a sugar solution of ________.
A) 4.29 M
B) 0.171 M
C) 7.57 M
D) 4.54 M
E) 11.36 M

Question

Quizplus · Accepted Answer

First, we need to calculate the number of moles of sugar in each solution:

Moles of sugar in 20.0 mL of 3.00 M sugar solution = (3.00 mol/L) x (20.0 mL/1000 mL) = 0.060 mol
Moles of sugar in 30.0 mL of 5.57 M sugar solution = (5.57 mol/L) x (30.0 mL/1000 mL) = 0.1671 mol

Next, we need to add the moles of sugar from each solution:

Total moles of sugar = 0.060 mol + 0.1671 mol = 0.2271 mol

Finally, we need to calculate the concentration of the resulting solution:

Concentration of sugar solution = Total moles of sugar / Total volume of solution

Total volume of solution = 20.0 mL + 30.0 mL = 50.0 mL = 0.0500 L

Concentration of sugar solution = 0.2271 mol / 0.0500 L = 4.54 M

Therefore, the answer is D.

If You Mix 20