Answer:
Explanation:
From the question we are told that:
1st Energy 
2nd Energy 
3rd Energy 
Generally the equation for Energy E for electron in one dimensional box at ground state 
is mathematically given by
Therefore Length a is mathematically given as
The answer to this question is B
Answer- the estimated number is 4 moles but it actually is 3.86 moles
Explanation
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During the chemical reaction, the solid substance that is insoluble formed during the combination of two aqueous solutions is called a precipitate. The answer is letter C. The precipitation reaction occurs when a salt is formed in the reaction of solutions with salts.
<h2> refer the attachment</h2>
<h2>If it is correct so mark as brainlest answer!</h2>
