How many total atoms in the chemical formula CaCO2? A.2

B.3

C.4

D.5

E.6

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

Asample of a gaseous substance changes into a liquid

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?