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Sonbull [250]
3 years ago
11

When 86.5 g of calcium chlorate decomposes into calcium chloride and oxygen, how many grams of oxygen are produced? Ca(ClO3)2 →

CaCl2 + O2
Chemistry
1 answer:
natita [175]3 years ago
8 0

Answer:

40.1 g

Explanation:

The <em>balanced equation</em> is:

  • Ca(ClO₃)₂ → CaCl₂ + 3O₂

First we <u>convert 86.5 g of calcium chlorate into moles</u>, using its<em> molar mass</em>:

  • 86.5 g Ca(ClO₃)₂ ÷ 206.98 g/mol = 0.418 mol Ca(ClO₃)₂

Then we <u>convert Ca(ClO₃)₂ moles into O₂ moles</u>, using <em>the stoichiometric coefficients of the balanced reaction</em>:

  • 0.418 mol Ca(ClO₃)₂ * \frac{3molO_2}{1molCa(ClO_3)_2} = 1.254 mol O₂

Finally we <u>convert O₂ moles into grams</u>:

  • 1.25 mol O₂ * 32 g/mol = 40.1 g O₂
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I hope it helped!

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3 years ago
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How many moles of KF would need to be added to 2500 ml of water to make 1.2 M solution?
Oduvanchick [21]

The number of moles of KF needed to prepare the solution is 3 moles

<h3>What is molarity?</h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the mole of KF </h3>
  • Volume = 2500 mL = 2500 / 1000 = 2.5 L
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Molarity = mole / Volume

1.2 = mole of KF / 2.5

Cross multiply

Mole of KF = 1.2 × 2.5

Mole of KF = 3 moles

Learn more about molarity:

brainly.com/question/9468209

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4 0
2 years ago
If one molecule of glucose (C6H12O6) reacts completely with three molecules of oxygen (O2), what is the TOTAL number of atoms th
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Answer;

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Explanation;

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The equation for the reaction would be;

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7 0
4 years ago
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Answer:

d

Explanation:

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The CO2 produced in one round of the citric acid cycle does not originate in the acetyl carbons that entered that round. If the
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Answer:

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Explanation:

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7 0
3 years ago
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