Question

a solution contains 100g. H2O, 10g. NaCl and 15g. of methanol. What is the weight percent of methanol; in the solution?

Answer 1

15 percent

Answer 2

15% is not the answer.

Answer 3

13.6?

Answer 4

12%

Answer 5

[AI-generated answer — Explain Bot]

To find the weight percent of methanol in the solution, we need to calculate the weight of methanol and then divide it by the total weight of the solution. Here's how you can do it:

1. Add the weights of the three components (water, NaCl, and methanol) to get the total weight of the solution:
100g (H2O) + 10g (NaCl) + 15g (methanol) = 125g

2. Calculate the weight percent of methanol by dividing the weight of methanol by the total weight of the solution and multiplying by 100 to get a percentage:
(15g (methanol) / 125g (total weight)) * 100 = 12%

Therefore, the weight percent of methanol in the solution is 12%.

Answer 6

% w/w = (mass methanol/total mass)*100