Question

What is the mass of salt in a 400 gram-sample of salt water which is 1.50% (w/w) salt?

A) 1.50 g
B) 2.67 g
C) 3.00 g
D) 6.00 g

Answer 1

The mass of salt in a 400 gram-sample of salt water which is 1.50% (w/w) salt is 6 grams.

Step-by-step explanation:

To find the mass of salt in a 400 gram-sample of salt water which is 1.50% (w/w) salt, we can use the concept of mass percent. Mass percent is the ratio of the mass of solute to the mass of the solution multiplied by 100. In this case, the mass of salt (solute) is 1.50% of the total mass of the salt water solution.

To calculate the mass of salt, we can use the formula:

Mass of salt = (1.50 / 100) x Total mass of the solution

Substituting the values, we get:

Mass of salt = (1.50 / 100) x 400 grams

Simplifying the equation, we find that the mass of salt in the 400 gram-sample of salt water is 6 grams.