In which reaction is there a transformation of mass into energy? For A P E X A. Two hydrogen atom fuse to form a helium atom

B. Ammonium nitrate breaks down into dinitrogen monoxide and water

C. Calcium oxide combines with water to form calcium hydroxide

D. Sodium combines with chlorine to form sodium chloride

Idon’t know how to solve this question

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.

Which of the following is not true about the atomic model of substances?