Which of the following is not required in a chemical reaction?
a.
atomic nuclei
c.
products
b.
reactants
d.
energy

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Which characteristics affect ocean water’s temperature? check all that apply. depth location mass salinity waves

How can the number of core electrons be determined from the periodic table