E Which argument best explains the charge of an atomic nucleus?
An atomic nucleus is positively charged because it is composed of neutrons.
O An atomic nucleus is positively charged because it is composed of protons.
O An atomic nucleus is negatively charged because it is composed of electrons.
O An atomic nucleus is negatively charged because it is composed of neutrons.
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Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

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.