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zepelin [54]
1 year ago
11

Based on the Hertzprung-Russell diagram, which statement is true? OA. Main sequence stars with low temperatures tend to have low

luminosity. B. Supergiants tend to have high luminosity and high temperatures. OC. Giants tend to be the stars with the highest luminosity. D. Main sequence stars with high temperatures tend to have low luminosity. ​
Chemistry
2 answers:
ololo11 [35]1 year ago
6 0

Main sequence stars with low temperatures tend to have low luminosity is based on Hertzprung-Russell diagram

<h3>What is the Hertzsprung-Russell diagram's main sequence?</h3>

The bright, hot stars in the image's upper left are the main sequence group, which stretches roughly diagonally to the lower right (dim and cool). In the bottom left are white dwarfs, which are small, faint, and hot. In the top right are giant and supergiant stars, which are big, bright, and cool.

<h3>What is the main sequence star H-R diagram trend?</h3>

Main sequence stars have a wide range of effective temperatures, but because they are brighter at higher temperatures, they normally follow a band from the bottom right to the top left of the diagram. Inside the cores, hydrogen and helium are fusing together.

To know more about H-R diagram visit:

brainly.com/question/13635125

#SPJ9

Roman55 [17]1 year ago
4 0

Answer: White dwarfs

Explanation: edge2020

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Answer: Mg\rightarrow Mg^{2+}+2e^- represents oxidation.

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

Example: Mg\rightarrow Mg^{2+}+2e^-

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

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Sergio039 [100]

The reaction is not balanced

<h3>Further explanation</h3>

Given

Reaction

2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

Required

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Solution

In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number

Reactants : Fe(s)+O₂(g)

Fe = 2 atoms

O = 3 x 2 = 6 atoms

Products : Fe₂O₃(s)

Fe = 2 x 2 = 4 atoms

O = 2 x 3 = 6 atoms

The reaction is not balanced because the number of Fe atoms is not the same

The balanced reaction should be:

4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

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