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kramer
3 years ago
6

Someone please answer this percent yield question

Chemistry
1 answer:
pav-90 [236]3 years ago
4 0
<h3>Answer:</h3>

388.94 g N₂

<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>Atomic Structure</u>

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

<u>Step 1: Define</u>

[RxN]   4HCl (g) + 6NO (g) → 5N₂ (g) + 6H₂O (g)

[Given]   404.87 g HCl

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

[RxN]   4 mol HCl = 5 mol N₂

Molar Mass of H - 1.01 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of HCl - 1.01 + 35.45 = 36.46 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of N₂ - 2(14.01) = 28.02 g/mol

<u>Step 3: Stoichiometry</u>

<u />404.87 \ g \ HCl(\frac{1 \ mol \ HCl}{36.46 \ g \ HCl} )(\frac{5 \ mol \ N_2}{4 \ mol \ HCl} )(\frac{28.02 \ g \ N_2}{1 \ mol \ N_2} ) = 388.935 g N₂

<u>Step 4: Check</u>

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

388.935 g N₂ ≈ 388.94 g N₂

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