How Many Moles Are Represented by 2

question 50

Multiple Choice

How many moles are represented by 2.5 × 10¹⁵ Na atoms?

• A) 3.8 × 10^-10 mol
• B) 1.8 × 10^-10 mol
• C) 1.5 × 10³⁹ mol
• D) 4.2 × 10^-9 mol
• E) 1.1 × 10¹⁴ mol

---

Definitions:

Dawn

Dawn is the time that marks the beginning of the twilight before sunrise, characterized by the appearance of soft light in the sky.

Dusk

The time of day immediately following sunset, characterized by diminishing natural light.

Noon

The middle of the day, typically regarded as 12:00 PM, when the Sun is at its highest point in the sky.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and absorbed by plants in photosynthesis.