WILL MARK AS BRAINLIEST! Element X has two known naturally occurring isotopes. The mass and relative abundance of each isotope are
shown below.

Relative Abundance
50.57%
49.43%

Mass (amu)
78
81

What is the average atomic mass of Element X to the nearest hundredth of an atomic mass unit?

A. 79.04 amu
B. 79.48 amu
C. 79.48 amu
D. 80.48 amu

i think that the answer is c

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.