1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ahrayia [7]
3 years ago
8

Potassium chlorate decomposes according to the following chemical equation:

Chemistry
2 answers:
kari74 [83]3 years ago
5 0

Answer:

179.4 g of oyxgen will be produced.

Option 2.

Be careful because the units says L instead of g

Explanation:

Decomposition reaction:

2KClO₃ → 2KCl + 3O₂

2 moles of chlorate can decompose to 2 moles of chloride and 3 moles of oxygen.

We convert the mass to moles, and then we make the rule of three:

458 g / 122.55 g/mol =3.74 moles of chlorate

2 moles of chlorate can produce 3 moles of oxygen

Then, 3.74 moles of chlorate may produce (3.74 .3) / 2 = 5.60 moles of O₂

We convert the moles to mass → 5.60 mol . 32 g / 1mol = 179.4 g

Sedaia [141]3 years ago
5 0

Answer:

179.39 grams of O2 will be produced (option 2 is correct)

Explanation:

Step 1: Data given

Mass of KClO3 = 458 grams

Molar mass KClO3 = 122.55 g/mol

Molar mass O2 = 32.0 g/mol

Step 2: The balanced equation

2KCIO3 → 2KCI + 3O2

Step 3: Calculate moles KClO3

Moles KClO3 = mass KClO3 / molar mass KClO3

Moles KClO3 = 458 grams / 122.55 g/mol

Moles KClO3 = 3.74 moles

Step 4: Calculate moles of O2

For 2 moles KClO3 we'll have 2 moles KCl and 3 moles O2

For 3.74 moles we'll have 3/2 * 3.74 = 5.606 moles

Step 5: Calculate mass O2

Mass O2 = 5.606 moles * 32.0 g/mol

Mass O2 = 179.39 grams

179.39 grams of O2 will be produced (option 2 is correct)

You might be interested in
How many nitrogen atoms are in 2.79 mo.of NH3
alexandr1967 [171]
1 mol of any particles has 6.02 * 10 ²³ particles.

If we look at 1 NH3 (1 mol NH3 or 1 molecule NH3), we can see that 1 molecule NH3 has 1 atom of N and 3 atoms of H; also 1 mole of NH3 has 1 mole of N atoms and 3 moles of H atoms.

So, 1 mol of NH3 has 1 mol of N atoms,
 and 2.79 mol NH3 have 2.79 mol of N atoms.

2.79 mol of N atoms* 6.02 * 10 ²³ N atoms/ 1 mol N atoms = 1.68*10²⁴ N-atoms 

 Answer is 1.68*10²⁴ N-atoms. 
5 0
3 years ago
Which of the following is a transuranium element?<br> Ra<br> Am<br> Tc<br> Pa
lyudmila [28]
Am - it has an atomic number of 95 which is greater than 92.

Transuranium elements are elements with atomic levels greater than 92
3 0
2 years ago
What are the primary elements of the earths layres?
Vaselesa [24]
The 4 main one are Iron, oxygen, silicon, and magnesium<span />
4 0
3 years ago
A block has a mass of 25 grams and a volume of 24.5 cm3 what is the<br> density of the block?
schepotkina [342]

Answer:

<h3>The answer is 1.02 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of block = 25 g

volume = 24.5 cm³

The density of the block is

density =  \frac{25}{24.5}  \\  = 1.020408163...

We have the final answer as

<h3>1.02 g/cm³</h3>

Hope this helps you

7 0
3 years ago
Explain why the melting point of calcium is high?
DanielleElmas [232]
It takes more energy to breakdown the bonds
5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the difference in concentration between a pH of 7 and 12?
    8·2 answers
  • The process by which water vapor changes to liquid water is called
    15·1 answer
  • Imagine that 27.0 g of C2H2(g) dissolves in 1.00 L of liquid acetone at 1.00 atm pressure. If the partial pressure of C2H2(g) is
    13·1 answer
  • The symbol mm represents​
    13·2 answers
  • Describe your understanding of atoms and their subatomatic particles
    14·1 answer
  • CH2OH<br> C=<br> H=<br> O=<br> pls help
    10·1 answer
  • Georgia has fourteen river basins and thousands of dams. What type of renewable energy could Georgia most likely create using th
    5·2 answers
  • How many grams of Fe2O3 are formed when 51.3 grams of iron, Fe, react completely with oxygen, O2? 4 Fe + 3 O2 --&gt; 2 Fe2O3
    7·1 answer
  • Convert 3,526 meters (m) into kilometers (km). (Don't forget units)<br> EN<br> Voranean
    12·1 answer
  • What chemicals do I need to make elephant’s toothpaste
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!