Why do reactions need to be balanced? A. Because the reactants must be the exact same as the products

B. Because of the conservation of energy

C. Because the volume of reactants must equal the volume of
products

D. Because atoms are not lost or gained in a chemical reaction

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

The table lists pressure and volume values for a particular gas. which is the best estimate for the value of v at p = 7.0 × 103 pascals?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true