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Alina [70]
3 years ago
9

Which scientist is created with developing the first scientific atomic theory

Chemistry
1 answer:
Alona [7]3 years ago
8 0
John Dalton was the first scientist
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How do take off my question when I don't have a question?
kotegsom [21]
Why would you ask a question if you didnt have a question?

Just get someone to report it, and itll be deleted
7 0
3 years ago
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Someone please explain how this works Which type of reaction occurs in the core of a nuclear reactor in a nuclear power plant?
Paul [167]

An example of a reaction that occurs within the core of a nuclear reactor is the nuclear fission reaction given:

  • ²³⁵₉₂U + ¹₀n ---> ⁹⁰₃₈Sr + ¹⁴³₅₄ + 3 ¹₀n

<h3>What is a nuclear reactor?</h3>

A nuclear reactor is a device which produces electrical energy as a result of the nuclear reactions that take place within it.

In a nuclear reactor, the reaction that takes place within the core is a nuclear fission chain reaction.

In a nuclear fission reaction, the nucleus of larger atoms are split into the nucleus of smaller atoms when fast moving neutrons are used to bombard the nucleus of the large atom. The fission of the nucleus of the large atom results in the formation of atoms of lighter nucleus as well as more protons which then bombard more nucleus of the large atoms resulting in a chain reaction.

The chain reaction occurring within the nuclear reactor core is controlled by the insertion of boron rods which absorbs the excess neutrons produced.

An example of a reaction that occurs within the core of a nuclear reactor is given below:

²³⁵₉₂U + ¹₀n ---> ⁹⁰₃₈Sr + ¹⁴³₅₄ + 3 ¹₀n

Learn more about nuclear fission at: brainly.com/question/913303

#SPJ1

4 0
1 year ago
How much heat is evolved in converting 1.00 mol of steam at 155.0 ∘c to ice at -50.0 ∘c? the heat capacity of steam is 2.01 j/(g
Ne4ueva [31]
When the specific heat capacity of the water is 4.18 J/g.°C so, we are going to use this formula to get the heat for cooling three  phases changes from steam to liquid and from liquid to ice (solid) :

when Q = M*C*ΔT 

Q is the heat in J

and M is the mass in gram = 1 mol H2O * 18 g/mol(molar mass) = 18 g

C is the specific heat J/g.°C

ΔT is the change in temperature

Q = Mw *[ ( Csteam * ΔTsteam)+(Cw*ΔTw) + (Cice  * ΔT ice)]

    = 18 g * [(2.01 * (155-100°C)) + (4.18 * (100-0°C)) + (2.09 * (0 - 55 °C))]

∴Q = 7444.8 J

and when we know that the heat of fusion for water = 334J/g

and heat of vaporization for water =  2260J/g


∴Q for the two phases changes = M * (2260+334) 

                                                      = 18 * (2260+334)

                                                      = 46692 J 

∴ Q total = 7444.8 + 46692 = 54136.8 J
5 0
3 years ago
(Please Help!) Aluminum reacts with oxygen to produce aluminum oxide (AI203). The balanced chemical equation for this reaction i
andriy [413]

#1

Moles of Oxygen =3

Molecules:-

  • 3×Avagadro no
  • 3(6.022×10²³)
  • 18.066×10²³
  • 1.8066×10²²molecules

#2

Its because according to law of conservation of mass- Mass is neither created nor destroyed

AS ITS BALANCED SO BOTH SIDES ARE SAME .

HENCE THEY OBEY

5 0
2 years ago
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What net force is required to cause a 12,000 kg airplane to accelerate at a rate of 5.2 m/s
galina1969 [7]
The answer is 624000N
6 0
2 years ago
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