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Sindrei [870]
3 years ago
8

222 Fr Beta decay of 87 I

Chemistry
1 answer:
svetoff [14.1K]3 years ago
4 0
It’s joe mama mamamamamammamamama ammamamamammama
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Arrange the events In the Ilfe of a star In the correct order.
Ksju [112]

The events in the life of a star in the correct order is as follows: F, B, C, D, E and A.

<h3>What is the life of a star?</h3>

The life of a star refers to the the events that occur in a star from when it formed newly until when it finally dies off.

When stars are newly formed, they are formed from star dust, and when just before they die, the form supernovas.

The several events in the life of a star can be arranged thus:

  • The temperature increases in the center of a nebula, and nuclei begin to fuse.
  • As the nuclear fusion sets off a chain reaction, the nebula gets hotter and brighter and turns into a star.
  • The star stays in the main sequence stage for a long time.
  • The star runs out of hydrogen and turns into a planetary nebula or a supernova, depending on its mass.
  • Heavy elements are created when the supernova explodes.
  • All that remains of the star now is the core. In some cases, the star turns into a black hole

In conclusion, the life of a star is the period of its formation to its burning out or death.

Learn more about life of a star at: brainly.com/question/988039

#SPJ1

Note that the complete question is given below:

Arrange the events in the life of a star in the correct order.

A. All that remains of the star now is the core. In some cases, the star turns into a black hole

B. As the nuclear fusion sets off a chain reaction, the nebula gets hotter and brighter and turns into a star.

C. The star stays in the main sequence stage for a long time.

D. The star runs out of hydrogen and turns into a planetary nebula or a supernova, depending on its mass.

E. Heavy elements are created when the supernova explodes.

F. The temperature increases in the center of a nebula, and nuclei begin to fuse.

8 0
2 years ago
How many monochloro substitution products are produced when the alkanes below are chlorinated?
slava [35]

<u>Answer:</u> The correct answer is 1.

<u>Explanation:</u>

When alkanes are reacted with chlorine gas at high temperatures or in the presence of light, it leads to the formation of chloro alkanes.

The process is known as chlorination.

Let us take the simplest alkane which is methane having chemical formula CH_4

The chemical equation for the chlorination of methane follows:

CH_4+Cl_2\xrightarrow[]{h\nu}CH_3Cl+HCl

The product formed is chloromethane.

Hence, the correct answer is 1.

7 0
3 years ago
A certain chip W used in a circuit of a micro computer has a mass of 5.68 milligram ,calculate the amount of W in the micro comp
Pavel [41]

The amount of W : = 1.22 x 10²⁰

<h3>Further explanation</h3>

Given

5.6 mg of a micro computer

Required

The amount of chip

Solution

A mole is a number of particles(atoms, molecules, ions)  in a substance

1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mass = 5.68 mg = 5.68 x 10⁻³ g

mol :

= mass : MW

= 5.68 x 10⁻³ g : 28 g/mol

= 2.03 x 10⁻⁴

The number of atoms :

= 2.03 x 10⁻⁴ x 6.02.10²³

= 1.22 x 10²⁰

6 0
3 years ago
An object is either copper or brass. The density of copper is 8.96g/ml. The density of brass is 8.73g/mL. I find that my object
Brrunno [24]
I like pp hehehehehe hehhe
6 0
4 years ago
Read 2 more answers
What is the meaning of semipermeability?​
ollegr [7]

Answer:

semipermeability

Explanation:

partially but not freely or wholly permeable specifically : permeable to some usually small molecules but not to other usually larger particles a semipermeable membrane.

8 0
3 years ago
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