The Density of Water Is 1

question 27

Multiple Choice

The density of water is 1.00 g/mL at 4°C. How many water molecules are present in 6.25 mL of water at this temperature? (N_A = 6.022 × 10²³ mol^-1)

• A) 6.27 × 10²³ molecules
• B) 3.76 × 10²⁴ molecules
• C) 2.09 × 10²³ molecules
• D) 6.02 × 10²³ molecules
• E) 0.347 molecules

---

Definitions:

Multiple Regression Equation

An equation that models the linear relationship between a dependent variable and multiple independent variables.

Expected Value

A measure of the central location of a random variable.

Independent Variables

Factors that are manipulated or controlled in an experiment to determine their effects on dependent variables.

Multiple Regression Model

A statistical technique that models the relationship between a dependent variable and two or more independent variables.