How Many Sodium Ions Are Present in 325 ML of 0.850

question 68

Multiple Choice

How many sodium ions are present in 325 mL of 0.850 M Na₂SO₄?

• A) 1.66 * 10²³ sodium ions
• B) 3.33 *10²³ sodium ions
• C) 4.99 * 10²³ sodium ions
• D) 6.20* 10²³ sodium ions
• E) 1.57 *10²⁴ sodium ions

---

Definitions:

Laboratory Research

Laboratory research is a controlled method of scientific investigation in which phenomena can be studied under predetermined conditions.

Controlled Setting

A controlled setting is an environment where variables are manipulated or held constant to examine their effect on outcomes in an experimental study.

Confounding Factors

Variables that interfere with the clarity of the relationship between the independent and dependent variables in a study.

Confidentiality

The ethical principle or legal right that a physician or other healthcare provider will hold secret all information relating to a patient, unless the patient gives consent permitting disclosure.