42 mole Al= how many atoms?

2.5 × 10²³ atoms Al

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

42 mol Al

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

2.52924 × 10²³ atoms Al ≈ 2.5 × 10²³ atoms Al

the answer is 0.42 is that is an option. this question provides no info