Which of these four atoms is the most chemically stable given the electron formation of each?
a) he
b) li
c) n
d) s

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

a:

by the combination of an unlimited number of elements

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.