The balanced equation for the reaction is as follows
2RbNO₃ --> 2RbNO₂ + O₂
stoichiometry of RbNO₃ to O₂ is 2:1
number of moles of RbNO₃ decomposed - 5.0 mol
when 2 mol of RbNO₃ decomposes, 1 mol of O₂ is formed
therefore when 5.0 mol of RbNO₃ decomposes - 5.0 / 2 = 2.5 mol of O₂
2.5 mol of O₂ is formed
Answer: A
Explanation: Boiling point increases with the rise of electrons.
The answer is: To demonstrate that the liquid is a mixture, the scientist can perform the chromatography.
Mixture: They are formed when two elements or compounds are combined physically and not chemically.
What are the types of mixtures?
- Mixtures are divided into two categories :Homogeneous and heterogeneous.
- Homogeneous mixtures- They have the same composition throughout their mass and there are no visible boundaries between the components of the mixture. Example- Sugar solution, salt solution, alloys, alcohol dissolved in water.
- Heterogeneous mixture- They do not have the same composition throughout there are visible boundaries between the components of the mixture. Example- Milk, sand, and iron fillings, solution of , solution of .
- To demonstrate the the given liquid is a mixture, the scientist can perform Chromatography.
- Chromatography is based on the different rates of adsorption of components of a mixture on a suitable adsorbent.
- When a drop of a mixture of substances is put on a chromatogram paper and the paper is dipped in a solvent, the substance that is more soluble in the solvent rises faster compared to others. And due to this difference in adsorption of different substances, they are separated by the method of chromatography.
- If two spots are seen on a chromatogram that means the liquid is a mixture and if only one spot is visible, that suggests that liquid is a pure liquid.
To learn more about the mixture and chromatography, visit:
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Answer:
To what temperature must a sample of helium gas be cooled from 22.2 degrees C to reduce its volume from 1.00L to 100cm3 ?
Explanation:
Hello there,
You dont have any option's, But I will be more than happy to (try) to help you.
Sour milk could make a stomach upset.
Milk has a limited time until it can not be drink-able.
I hope that can help,You didn't have any option's to lay out, I hope that help's.
~Jurgen