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Alenkasestr [34]
3 years ago
10

Describe the brightness and temperature of the stars classified as giants.

Chemistry
1 answer:
Readme [11.4K]3 years ago
8 0

Answer:

A hotter star should be brighter than a cooler star. ... Although they are cool [red], they are very luminous, and therefore bright. In the Main Sequence, stars that are cool are not as luminous. Because the energy is spread across a larger area, surface temperatures are actually cooler, reaching only 2,200 to 3,200 degrees Celsius (4,000 to 5,800 degrees Fahrenheit), a little over half as hot as the sun

Explanation:

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Which equation shows the beta decay of a transuranium element
GalinKa [24]

1) Since you have not provided the equations to select the right one, I am going to explain you the relevant facts that are used to solve this question.



2) The transuranium elements are the chemiical elements with atomic number greater than that of the uranium.


The atomic number of uranium is 92. So, the transuranium elements are the elements with atomic number 93 or greater.



This are some of the transuranium elements:


Neptunio - 93

Plutonium - 94

Americium - 95

Curium - 96

Berkelium - 97

Californium - 98

Einstenium - 99



And so all the known elements (the last one is the 118).



3) In a nuclear reaction the total mass number ( shown as superscript to the left of the symbol) and total atomic number (shown as subscript to the left of the symbol) are conserved.



4) Beta decay is the release of a beta particle, which is an electron (considered massles and with charge - 1). So, the beta decay is represented with the symbol:


0

  β, which means 0 mass and charge - 1.

-1



5) This is, then, an example of a β decay equation for one transuranium element:


239              239            0

      Np    →         Pu   +      β

  93                94            -1



As you see 239 = 239 + 0 and 93 = 94 - 1, showing that the total mass number ( shown as superscript to the left of the symbol) and the total atomic number (shown as subscript to the left of the symbol) are conserved.


5 0
3 years ago
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WARRIOR [948]

Answer:

Used as rocket fuel, is a fertilizer ingredient, used in cooking, used to provide lighting, and used in production of other compounds

Explanation:

Hope this helps!!!

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Polar liquids have both negative and positive ends.
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