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How many formula units are there in 50.3 moles potassium chloride?

Sagot :

Space

Answer:

3.03 × 10²⁵ formula units KCl

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

Unit 0

  • Reading a Periodic Table
  • Writing Compounds

Atomic Structure

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

Explanation:

Step 1: Define

50.3 mol KCl (Potassium chloride)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[tex]\displaystyle 50.3 \ mol \ KCl(\frac{6.022 \cdot 10^{23} \ formula \ units \ KCl}{1 \ mol \ KCl} )[/tex] = 3.02907 × 10²⁵ formula units KCl

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

3.02907 × 10²⁵ formula units KCl ≈ 3.03 × 10²⁵ formula units KCl

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