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
slamgirl [31]
2 years ago
6

What is the mass of oxygen in 25.0 grams of potassium permanganate , KMnO4?

Chemistry
2 answers:
MArishka [77]2 years ago
4 0

Answer: 10.1 g

I just did it and got i right

Katen [24]2 years ago
3 0

Answer:

10.76 grams

Explanation:

Given that the amount of KMnO_4 is 25.0 grams.

Mass of 1 mole of KMnO_4 = 158 grams

The number of atoms in 1 mole of KMnO_4 is 4.

Mass of oxygen in 1 mole of KMnO_4 = 16\times 4 = 68 grams.

Here, 158 grams of KMnO_4 has 68 grams of oxygen

So, the amount of oxygen in 1 gram of KMnO_4 = 68/158 grams

Therefore,  the amount of oxygen in 1 gram of KMnO_4 = \frac {68}{158}\times 25 grams

=10.76 grams

Hence, 25 grams of KMnO_4 has 10.76 grams of oxygen.

You might be interested in
The electron dot structure for CI is
finlep [7]
The correct option is C.
A Lewis dot diagram is a representation of the valence electron of  an atom, which uses dot around the symbol of the atom. Chlorine has seven electrons in its outermost shell, these seven electrons are arranged in form of dot around the atom of chlorine. If you count the number of dot given in option C, you will notice that they are seven.
6 0
3 years ago
Read 2 more answers
Which stament about energy is mostly correct
klasskru [66]
I would say C is the most correct. 
In D it depends on what water source you're using. Let's say it is a waterfall, then the source of the water (melting ice or a lake) may disappear in the future. 
If you're using underwater "windmills" placed in the ocean, then you would expect it to last a while as the ocean will not disappear in the near future. 
6 0
3 years ago
What percentage of the total incoming radiation to the Earth reaches the ground? 20 30 40 70
weeeeeb [17]

Answer: 22.5 percent of incoming solar radiation goes directly to the surface of the Earth and is absorbed.

Explanation: Transfer of radiation through a planet's atmosphere. A planet and its atmosphere, in our solar system, can radiate back to space only as much energy as it absorbs from incoming solar radiation.

8 0
3 years ago
C-12, c-13, and c-14 have the same number of protons but different numbers of neutrons so they are
laiz [17]
Atoms with the same number of protons, but different numbers of neutrons are isotopes of the same element.
6 0
3 years ago
Which pair shares the same empirical formula? C2H4 and C6H6 CH2 and CH4 CH3 and C2H6 CH and C2H4
hoa [83]

Answer:

CH3 and C2H6

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is true for all organisms?
    15·1 answer
  • I’m confused on question 13
    14·1 answer
  • What is the difference between electron configuration and valence electron configuration?
    14·1 answer
  • Describe what can happen to the reaction rate of a system that is heated then cooled
    14·1 answer
  • Write a structural formula for 1-pentanol, the alcohol derived from pentane, by making a substitution on one of the carbon atoms
    14·1 answer
  • Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
    5·2 answers
  • HELP ME PLEASE!!
    15·1 answer
  • Whivh is the correct mole ratio of K3N to KCI in the chemical reaction ​
    14·1 answer
  • A store sell 21 piece of clothing every 45 minutes.How long will it take the store to sell 100 pieces of clothing?
    9·1 answer
  • In a terrarium, the pincushion moss, the echeveria, and the moon cactus make up which of the following? Select all that apply. A
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!