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anzhelika [568]
4 years ago
13

What is the sum of the coefficients of the following balanced chemical equation? KI + Pb(NO3)2 → KNO3 + PbI2 A) 6 B) 10 C) 18 D)

20
Chemistry
2 answers:
r-ruslan [8.4K]4 years ago
8 0

Answer: The answer is 6. Or A on USATestprep.

Explanation: The sum of the coefficients of the balanced chemical equation is 6. The coefficients are the numbers in front of the compounds in the reaction equation.

denis23 [38]4 years ago
6 0

Answer:

its a. plz mark brainliest

Explanation:

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2c+02=2CO2. The moles of co2 produced when 0.25 moles of O2 react is?​
Sophie [7]
<h3>Answer:</h3>

\displaystyle 0.5 \ mol \ CO_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> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Moles
  • Compounds

<u>Stoichiometry</u>

  • Using Dimensional Analysis
  • Analyzing Reactions RxN
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 2C + O₂ → 2CO₂

[Given] 0.25 moles O₂

[Solve] moles CO₂

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

[RxN] 1 mol O₂ → 2 mol CO₂

<u>Step 3: Stoichiometry</u>

  1. [DA] Set up:                                                                                                     \displaystyle 0.25 \ moles \ O_2(\frac{2 \ mol \ CO_2}{1 \ mol \ O_2})
  2. [DA] Multiply/Divide [Cancel out units]:                                                        \displaystyle 0.5 \ mol \ CO_2
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