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Setler79 [48]
3 years ago
9

Please help me solve these chemical equations:

Chemistry
2 answers:
Reil [10]3 years ago
8 0
CaCO3 = CaO + CO2
I2 + 2Na2S2O3 = 2NaI + Na2S4O6
6Mg + P4 = 2Mg3P2
2Na + Cl2 = 2NaCl
soldier1979 [14.2K]3 years ago
7 0
This is impossible and confusing!!!
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Explanation:

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An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope?
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What correctly shows the stages of mitosis in order
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What is the mass of 5.26 mol Fe2(SO4)3?<br> Answer in units of g.
dsp73
<h3>Answer:</h3>

2100 g Fe₂(SO₄)₃

<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>

  • Using Dimensional Analysis

<u>Atomic Structure</u>

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

<u>Step 1: Define</u>

5.26 mol Fe₂(SO₄)₃

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

Molar Mass of Fe - 55.85 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Fe₂(SO₄)₃ - 2(55.85) + 3(32.07) + 12(16.00) = 399.91 g/mol

<u>Step 3: Convert</u>

  1. Set up:                               \displaystyle 5.26 \ mol \ Fe_2(SO_4)_3(\frac{399.91 \ g \ Fe_2(SO_4)_3}{1 \ mol \ Fe_2(SO_4)_3})
  2. Multiply/Divide:                 \displaystyle 2103.53 \ g \ Fe_2(SO_4)_3

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

2103.53 g Fe₂(SO₄)₃ ≈ 2100 g Fe₂(SO₄)₃

3 0
3 years ago
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