Which of the following is true for covalent bonding? A.
electrons are shared

B.
electrons are transferred

C.
particles are always positively charged

D.
oxidation numbers are always negative

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

answer7,570,82356 cubic centimeters;