A Solution Is Prepared by Mixing 15

question 57

Multiple Choice

A solution is prepared by mixing 15.0 mL of 0.100 M HCl and 5.00 mL of 0.200 M NaCl. What is the molarity of chloride ion in this solution?

• A)0.175
• B)8.00
• C)1.25
• D)0.0250
• E)0.125

---

Definitions:

Cov (x,y)

Represents the covariance between two variables \(x\) and \(y\), measuring how changes in one variable are associated with changes in another.

Covariance

A statistical measure that indicates the extent to which two variables change together; if the greater values of one variable mainly correspond with the greater values of the other variable, and the same holds for the lesser values, the covariance is positive.

Slope

A measure of the steepness or incline of a line, representing the ratio of the change in the y-value to the change in the x-value.

Coefficient of Correlation

A statistical measure that computes the strength and direction of a linear relationship between two variables.