How many protons, neutrons, and electrons does uranium-235 have

Answers

Answer 1

Answer:

Uranium-235 is composed of 92 protons, 143 neutrons, and 92 electrons.

What are electrons?

An electron is a negatively charged subatomic particle.

Uranium-235 is a naturally occurring isotope of uranium, an element characterized by having 92 protons in its nucleus.

As all uranium nuclei have 92 protons, the nucleus of a uranium-235 atom will also have 143 neutrons to give it a total atomic mass number of 235.

Thus, Uranium-235 is composed of 92 protons, 143 neutrons, and 92 electrons.

Learn more about electrons here:

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Answer 2

Answer:

Answer:

Uranium is element 92, so unionized, it has 92 protons and electrons. U-235 is an isotope with a total of 235 nucleons, so subtract 92 to get 143 neutrons.

Explanation:

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A chemical reaction between iron atoms and oxygen molecules can only occur if(1) the particles are heated
(2) the atmospheric pressure decreases
(3) there is a catalyst present
(4) there are effective collisions between the particles

Answers

Answer: option (4) there are effective collisions between the particles

Justification:

The collision theory explains the chemical reactions in terms of collisions. A chemical reaction takes place if two molecules collide effectively.

So, the first conditon is that the collision occur.

The second condition, that the collision be effective requires two conditions:

1) that the collision occurs with the proper orientation of the molecules, and

2) that the energy of collision be high enough to start the break of the original bonds ant the creation of the new bonds in the activated complex.

The energy required to form this activated complex is the activation energy.

So, an effective collision requires the proper orientation of the molecules when they collide and that the energy be equal or greater than the activation energy.

Temperature and catalyst are factors that affect the occurrence of those collisions, so they affect the rate of the reaction, by modifiying the number of collisions.

the answer is D because in order for a reaction to take place there must be collisions between the iron and oxygen atoms

Which statement best summarizes the importance of Ernest Rutherford’s gold foil experiment?

Answers

Which statement best summarizes the importance of Ernest Rutherford’s gold foil experiment?
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I need to know the answer for number two. * I

Answers

Answer:

The answer to your question is (C). I would work out the question for you lad, but I don't know how to do it on here.

Explanation:

What is the diffrence between acidic and basic solutions in working with redox reactions?

Answers

In acidic solutions you have H+ but in basic solutions you have OH-.
You need know that for to balance the reaction.

Which of the following is equal to 4 kilograms? A. 4,000 mg
B. 4,000 g
C. 40 g
D. 4,000 cg

Answers

Of course , B. 4,000 g

In the early 1880s, the British Scientist John Dalton worked to find the atomic mass of several common elements.How could knowing the atomic mass of an element help a chemist do his or her work?

A. The atomic mass could be used to convert that element into another element.

B. The atomic mass could be used to identify an element.

C. The atomic mass could be used to calculate the number of isotopes formed by the element.

Answers

C. The atomic mass could be used to calculate the number of isotopes formed my the element.

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