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AlexFokin [52]
3 years ago
8

A sample of iron (III) chloride has a mass of 26.29g. How many moles would this be?

Chemistry
1 answer:
vekshin13 years ago
8 0
<h3>Answer:</h3>

0.1621 mol FeCl₃

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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

<u>Chemistry</u>

<u>Compounds</u>

  • Determining compound formulas

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

26.29 g FeCl₃ (iron (III) chloride)

<u>Step 2: Identify Conversions</u>

Molar Mass of Fe - 55.85 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of FeCl₃ - 55.85 + 3(35.45) = 162.2 g/mol

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 26.29 \ g \ FeCl_3(\frac{1 \ mol \ FeCl_3}{162.2 \ g \ FeCl_3})
  2. Multiply:                            \displaystyle 0.162084 \ moles \ FeCl_3

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 4 sig figs.</em>

0.162084 mol FeCl₃ ≈ 0.1621 mol FeCl₃

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Hope that answers your question!!!!have a great day!!!



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