Describe the spin of carbon-14's valence electrons and explain how you came about your answer.
1 answer:
we have to know the spin of valence electrons of carbon-14
There are four unpaired electron which are called as valence electron also.The spin of the four unpaired electron is either upfilled or down filled.
The ground state electronic configuration of C-atom is 1s²2s²2p² and one electron from 2s orbital gets excited to 2p orbital. The elctronic configuration in excited state is 1s²2s¹.
The electron jumps because half-filled orbitals are more stable. Exchange energy is less than pairing energy.
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Considering the definition of molarity, 0.4375 moles of iron(II) nitrite you would recover.
In order to find the moles of the solid that can be recovered from this solution, you need to use the definition of molarity.
<h3>Definition of molarity</h3>Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
Molarity is expressed in units .
Moles of iron(II) nitrite
In this case, you evaporated 125 mL of a 3.5 M solution of iron(II) nitrite. Then you know:
- Molarity= 3.5 M
- number of moles= ?
- volume= 125 mL= 0.125 L (being 1000 mL= 1 L)
Replacing in the definition of molarity:
Solving:
number of moles= 3.5 M× 0.125 L
<u><em>number of moles= 0.4375 moles</em></u>
Finally, 0.4375 moles of iron(II) nitrite you would recover.
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