To get the concentration of the second solution let us use the following formulae
C1V1=C2V2 where C1 is concentration of first solution and V1 is the volume of solution first solution. on the other hand C2 is the concentration of second solution and V2 is the volume of second solution.
<span>If the standard solution contains 0.8 mg/mL of a substance and there are 2 mL of the solution, then that quantity contains 0.8*2 = 1.6 mg of the substance. Adding 10mL of water, the new volume will be 2mL + 10mL = 12 mL and there will still be the same 1.6 mg of the substance. Thus the new concentration will be 1.6mg/12mL = 0.133 mg/mL.</span>
This would be the Melting point because it is showing that at a certain heat it melts so therefore it is the point it melts and therefore called the melting point
