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Crank
3 years ago
8

2Na + Cl2 → 2NaCl

Chemistry
1 answer:
antoniya [11.8K]3 years ago
4 0
<h3>Answer:</h3>

\displaystyle 0.75 \ mol \ Cl_2

<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>Stoichiometry</u>

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

<u>Step 1: Define</u>

[RxN] 2Na + Cl₂ → 2NaCl

[Given] 34.485 g Na

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

[RxN] 2 mol Na = 1 mol Cl₂

Molar Mass of Na - 22.99 g/mol

<u>Step 3: Stoichiometry</u>

  1. Set up:                              \displaystyle 34.485 \ g \ Na(\frac{1 \ mol \ Na}{22.99 \ g \ Na})(\frac{1 \ mol \ Cl_2}{2 \ mol \ Na})
  2. Multiply/Divide:                \displaystyle 0.75 \ mol \ Cl_2

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 5 sig figs.</em>

Since our final answer has 2 sig figs, there is no need to round.

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