If an atom has 16 protons, 15 neutrons, and 19 electrons, what is the atom's electrical charge?
a. -3
b. 1
c. -1
d. 3

Which substance absorbs 58.16 kj of energy when 3.11 mol vaporizes? a)ch4 b)h2s c)co2 d)nacl

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution