The concentration of
is
by mass.
Further Explanation:
The proportion of substance in the mixture is called concentration. The most commonly used concentration terms are as follows:
1. Molarity (M)
2. Molality (m)
3. Mole fraction (X)
4. Parts per million (ppm)
5. Mass percent ((w/w) %)
6. Volume percent ((v/v) %)
Mass percent:
It is the ratio of the mass of a component divided by the total mass of the solution, multiplied by 100.
The formula to calculate the mass percent of
is as follows:
…… (1)
The formula to calculate the mass of
solution is as follows:
…… (2)
The mass of
is 27.7 g.
The mass of water is 375 g.
Substitute these values in equation (2).

The mass of
is 27.7 g.
The mass of
solution is 402.7 g.
Substitute these values in equation (1).

Therefore the mass percent of
is 6.88 %.
Learn more:
1. What is the concentration of alcohol in terms of molarity?: brainly.com/question/9013318
2. What is the molality of the HCl solution? brainly.com/question/8426727
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Concentration terms
Keywords: mass percent, 6.88 %, mass of CaCl2, mass of water, mass of CaCl2, concentration, CaCl2, 27.7 g, 375 g, 402.7 g.