Respuesta :

Space

Answer:

1.3 × 10²⁴ particles AlPO₄

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

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

Stoichiometry

  • Using Dimensional Analysis

Explanation:

Step 1: Define

2.1 mol AlPO₄

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

  1. Set up:                        [tex]\displaystyle 2.1 \ mol \ AlPO_4(\frac{6.022 \cdot 10^{23} \ particles \ AlPO_4}{1 \ mol \ AlPO_4})[/tex]
  2. Multiply/Divide:          [tex]\displaystyle 1.26462 \cdot 10^{24} \ particles \ AlPO_4[/tex]

Step 4: Check

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

1.26462 × 10²⁴ particles AlPO₄ ≈ 1.3 × 10²⁴ particles AlPO₄

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