3 years ago

Which techniques would be best for separating a

Chemistry

1 answer:

pashok25 [27]3 years ago

6 0

Answer: centrifugation, boiling/heating , and long standing

Explanation:

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How many moles of KCIO3 are required to produce 58.3 grams of 02? 2 KCIO3 —> 2 KCI + 3 O2

strojnjashka [21]

Answer:

1.21 mol KClO₃

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
Mole Ratio

Stoichiometry

Analyzing reactions rxn
Using Dimensional Analysis

Explanation:

Step 1: Define

Identify variables

[rxn] 2KClO₃ → 2KCl + 3O₂

[Given] 58.3 g O₂

[Solve] mol KClO₃

Step 2: Identify Conversions

[rxn] 2 mol KClO₃ → 3 mol O₂

[PT] Molar Mass of O: 16.00 g/mol

Molar Mass of O₂: 2(16.00) = 32.00 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 58.3 \ g \ O_2(\frac{1 \ mol \ O_2}{32.00 \ g \ O_2})(\frac{2 \ mol \ KClO_3}{3 \ mol \ O_2})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 1.21458 \ mol \ KClO_3$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

1.21458 mol KClO₃ ≈ 1.21 mol KClO₃

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