Respuesta :

Space

Answer:

76000 mol C

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Chemistry

Atomic Structure

  • Moles
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

  • Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 4.6 × 10²⁸ atoms C

[Solve] moles C

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

  1. [DA] Set up:                                                                                                       [tex]\displaystyle 4.6 \cdot 10^{28} \ atoms \ C(\frac{1 \ mol \ C}{6.022 \cdot 10^{23} \ atoms \ C})[/tex]
  2. [DA] Multiply/Divide [Cancel out units]:                                                           [tex]\displaystyle 76386.6 \ mol \ C[/tex]

Step 4: Check

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

76386.6 mol C ≈ 76000 mol C

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