Answer:
Explanation:
Hello there!
In this case, since the molality of a solution is calculated by dividing moles of solute by kilograms of solvent, it turns out firstly necessary for us to calculate the moles of methyl alcohol in 75.0 grams as shown below:
Then, the kilograms of water, 0.600 kg, and finally, the resulting molality:
Regards!
<span>These are the rules of the quantum numbers that you have to use to dilucidate the validity of a set of quantum numbers:
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<span>1) Main quantum number, n: 1, 2, 3, 4, 5, 6, 7
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2) Second quantum number, ℓ: 0, 1, 2, ... n-1
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<span>3) Third quantum number (magnetic quantum number), mℓ: -l,...0,,,,+l
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<span>4) Fourth quantum number (spin): ms: +1/2 or -1/2
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Answers:
<span>i) 3,2,0,1/2: valid, because 0<= l < n; - l <= ml <= +l; and ms = +1/2 or -1/2
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</span><span>ii) 2,2,-1, 1/2 invalid because l = n (violates second rule)</span><span /><span>
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</span><span>iii) 4,3,-4,1/2 invalid because ml is less than - l (violates third rule)</span><span /><span>
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</span><span>iv) 1,0,0,1/2 valid: meet the four rules</span><span /><span>
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</span><span>v) 2,2,1,-1/2 invalid because l = n (violate the second rule)</span><span /><span>
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</span><span>vi) 3,2,1,1 invalid because ms can be only +1/2 or -1/2 (fourth rule)
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<span /><span /><span>vii) 0,1,1,-1/2 invalid because l > n (violates rule 2)
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<span /><span /><span>viii) 3,3,1,1/2 invalid because l = n (violate rule 2)
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<span /><span /><span>ix) 2,-2,-2,-1/2 invalid because l is negative (violates rule 2)
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x)<span> 3,2,2,1/2 valid: meet the four rules</span>
xi)<span> 4,2,1,1/2 valid: meet the four rules</span>
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</span><span>xii) 2,1,-1,-1/2 valid meet the four rules</span>
Answer:
⁴⁰₂₀Ca + ⁰₋₁e
Explanation:
Beta decay:
Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.
Properties of beta radiations:
The mass of beta particle is smaller than the alpha particles.
They can travel in air in few meter distance.
These radiations can penetrate into the human skin.
The sheet of aluminium is used to block the beta radiation
⁴⁰₁₉K → ⁴⁰₂₀Ca + ⁰₋₁e
The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.
Answer:
The answer is actually CO4
Explanation:
prove me wrong