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forsale [732]
4 years ago
7

How many protons does oxygen have?

Chemistry
2 answers:
Sidana [21]4 years ago
3 0

Answer:

8 Protons

Explanation:

Oxygen is the 8th element in the periodic table. That means that oxygen has 8 protons and 8 electrons. To get the number of neutrons you take the atomic weight in this case 15.9999~16 and you subtract it by the number of protons.

Romashka-Z-Leto [24]4 years ago
3 0

Answer:

8 protons.

Explanation:

The atomic number number of the element = the number  of protons in it's nucleus.

For oxygen it is 8.

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The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because:____.
tatiyna

Because it requires more energy to create a neutron from a proton than it does to create a proton from a neutron, protons were formed more frequently than neutrons in the early universe. The correct answer is option b.

To find the answer, we need to know more about the early universe.

<h3>How the formation of proton over neutrons was favored in the early universe?</h3>
  • A neutron is produced with greater energy than a proton.
  • However, later on, some of the protons were changed into neutrons.
  • Contrary to some claims, the proton is a stable particle that never decays, but the neutron is unstable outside of the nucleus and decays with a half life of around 10.5 minutes.
  • However, very few would have had time to decay on the timeline you mention in your question.
  • Every matter particle should have been accompanied by an antimatter particle, and every proton, neutron, and electron, by an anti-neutron and a positron, respectively.
  • Where did all the antimatter go is the great mystery. There have been a few attempts to explain this, but they have failed.

Thus, we can conclude that, the correct answer is option b.

Learn more about the early universe here:

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7 0
2 years ago
Question 5 (1 point)
Aleksandr-060686 [28]

Answer : The pressure it exert under these new conditions will be, 87 atm

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 19 atm

P_2 = final pressure of gas = ?

V_1 = initial volume of gas = 100 L

V_2 = final volume of gas = 20 L

T_1 = initial temperature of gas = 25^oC=273+25=298K

T_2 = final temperature of gas = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{19atm\times 100L}{298K}=\frac{P_2\times 20L}{273K}

P_2=87atm

Therefore, the pressure it exert under these new conditions will be, 87 atm

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3 years ago
When a liquid absorbs energy and changes to a gas, what takes place?
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D, Evaporation. Like the water cycle..
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Explanation:

Hi there!

I attached a photo of a unit summary that states the difference between s-t and v-t graph.

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3 years ago
The radioisotope that has the longest half-life is the best to use in powering planet and space exploration vehicles because the
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4 0
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