1.54 × 10²⁴ atoms He
Math
Pre-Algebra
Order of Operations: BPEMDAS
Chemistry
Atomic Structure
Stoichiometry
Step 1: Define
[Given] 2.56 moles He
[Solve] atoms He
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
1.54163 × 10²⁴ atoms He ≈ 1.54 × 10²⁴ atoms He