Use the image below to help you answer this question: Your friend has a red laser pointer. What would happen to the light coming
from the laser pointer if it's wavelength were to increase (decrease its frequency).Single choice. (1 Point)
a The light would shift towards the color blue
b The light would no longer be visible to the human eye
c The light would be brighter
d The light would be less bright
a The light would shift towards the color blue
b The light would no longer be visible to the human eye
c The light would be brighter
d The light would be less bright
1 answer:
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Answer:
Explanation:
Hello!
In this case, for the described chemical reaction, we find it is:
Because it says that the iron is dissolved in a strong acid which provides addition hydrogen ions to the reaction media. Thus, for the questions attached on the figure we find:
- This a REDOX reaction because we see iron is being oxidized from 2+ to 3+ and manganese reduced from +7 to +2.
- Since it is a redox reaction and the oxidized species is that undergoing an oxidation number increase, we evidence iron goes from +2 to +3, which means iron is the oxidized species.
- In this case, for the used 59.2 mL (0.0592 L) of the 0.2000 M solution of potassium permanganate, we can compute the consumed grams of iron via stoichiometry including the 5:1 mole ratio between them in the chemical reaction:
It means that the percent of iron in that sample is:
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