Question

Luisa needed 25 mg of sodium to perform her chemistry experiment. Her test tube contained only 4 mg. What percent of the needed sodium was in the test tube?

a. 6%
b. 12%
c. 16%
d. 24%

Answer 1

Luisa's test tube contains 16% of the needed sodium for her chemistry experiment.

Step-by-step explanation:

To find what percentage of the needed sodium is in Luisa's test tube, divide the amount of sodium in the test tube by the total amount needed, then multiply by 100 to get the percentage:

1. Amount of sodium in the test tube = 4 mg
2. Amount of sodium needed = 25 mg
3. Calculate the percentage: (4 mg ÷ 25 mg) × 100 = (0.16) × 100 = 16%

The test tube contains 16% of the needed sodium.