A Mixture of NaCl and NaNO₃ Is 31

question 22

Multiple Choice

A mixture of NaCl and NaNO₃ is 31.7% sodium by mass. What is the approximate percent of NaCl in this mixture?

• A) 32%
• B) 30%
• C) 38%
• D) 36%
• E) 34%

---

Definitions:

Regression

A statistical method used to understand the relationship between a dependent variable and one or more independent variables.

Kilowatt-Hours

A unit of energy measurement equal to the power consumption of one thousand watts for one hour.

Square Feet

A unit of area measurement in the Imperial and US customary systems, used to measure the size of an area.

Selling Price

The final amount of money charged for a product or service, representing the cost to the buyer under conditions of sale.