The question is incomplete, the complete question is found in the image attached to this answer.
Answer:
0.3
Explanation:
Molar mass of benzene = 78 g/mol
Molar mass of heptane = 100 g/mol
number of moles of heptane = 59 g/100 g/mol = 0.59 moles
number of moles of benzene = 103 g/78 g/mol = 1.32 moles
Total number of moles = 0.59 + 1.32 = 1.91 moles
Mole fraction of heptane = 0.59/1.91 = 0.31
The answer is <span>PSBr_3. i hope it helps</span>
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:
brainly.com/question/28130096
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