When the rection stopped , the total mass had decreased from 102.5g to 101.4g . some water jad evaporated from the beaker. what else caused the drop in mass?

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

Ineed to find the answer of this question because i dont understand it

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.