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
KatRina [158]
4 years ago
15

The reaction of 0.779 g K with O2 forms 1.417 g potassium superoxide, a substance used in self-contained breathing devices. Dete

rmine the formula for potassium superoxide.
Chemistry
1 answer:
zhannawk [14.2K]4 years ago
3 0
First we need to find the number of moles of both K and O reacted
K - 0.779 g / 39 g/mol
  = 0.02 mol
the mass of O₂ reacted = 1.417 g - 0.779 g = 0.638 g
O₂ moles = 0.638 g / 32 g/mol
               = 0.02 mol 
the number of both K and O₂ moles reacted are equal 
therefore stoichiometry of K to O₂ reacted are 1:1 
then the formula of potassium superoxide is KO₂
You might be interested in
A fusion reaction takes place between carbon and another element. Neutrons are released, and a different element is formed. The
sdas [7]

Answer:

Dependent on the element that reacted with carbon

Explanation:

Nuclear fusion is the combination of small atomic nuclei into larger ones usually accompanied with the release of a large amount of energy.

From the problem stated, carbon fuses with another atom. The combined atom would have more nuclear particles in terms of protons and neutrons than the combining atoms. This will eventually make it weigh more than carbon and the atom it combines with. The resulting weight will depend on the combining atoms eventually.

7 0
3 years ago
Read 2 more answers
Help need answer to this, its due tomorrow.<br><br> __N2+__H2&gt;__NH3
Klio2033 [76]
N2+3H2-->2NH3
is the answer
3 0
3 years ago
Balance this equation-<br> Na3PO4 + KOH -&gt; NaOH + K3PO4
SSSSS [86.1K]
Na3PO4 + 3 KOH = 3 NaOH + K3PO4
3 0
3 years ago
Read 2 more answers
In column chromatography (microscale), after loading it with solvent and adsorbent and prior to loading the sample, what level s
Nikolay [14]

Answer:

Explanation:

You should allow the solvent to drop to the level of the adsorvent, so it would never run dry.

When you let your sample to run dry it will never finish to flow from the adsorbent depending of it polarity.

Water should not be used because it can dissolve the adsorbent.

You could use another technique to identify the compound, as an infrared or a ultraviolet detector. You can also, if you know the compounds, identify it for the retention time, for example, if you need to detect two compounds, one more polar than the other, and use a polar adsorbent and a non-polar solvent, the first compound to exit the column will be the less polar one, because it will have a bigger interaction with the solvent than the stationary phase (adsorbent) and will go faster, the second will be the more polar one, because it will have a bigger interaction with the stationary phase.

5 0
4 years ago
How many Atoms are in H2COCH? Need asap pleassseee!
bearhunter [10]
There is a total of 12, wish you luckkkkkkkk
3 0
3 years ago
Other questions:
  • You have a mixture that contains 0.380 moles of Ne(g), 0.250 moles of He(g), and 0.500 moles CH4(g) at 400 K and 7.25 atm. What
    11·1 answer
  • A state of equilibrium can exist when a piece of copper metal is placed in a solution of copper(ii) sulfate. outline the charact
    12·1 answer
  • I don’t know how to do this please help
    8·1 answer
  • The answer to this question
    12·1 answer
  • a sample of gas with a volume of 30.0 ml at 25.0 °c is heated to 50.0 degrees celsius. what is the new volume of the gas?
    7·1 answer
  • An isotope of the element fluorine has 9 protons and 10 neutrons. What is the name of this isotope?fluorine
    5·2 answers
  • which is a chemical change, water boiling, wood burning,glass breaking, ice melting, or molding iron ?
    5·2 answers
  • How does energy from the Sun drive the cycling of matter?
    9·1 answer
  • Identify each of the following properties as more typical of organic or inorganic compound
    7·1 answer
  • Many electrical power plants use fossil fuels, a non-renewable resource to produce electricity?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!