An unknown element has two common isotopes. The masses of the two isotopes and percent abundances are as follows:
7.02 amu, 92.51%
6.015 amu, 7.49%
What is the average atomic mass of this unknown element? Based on your findings, please
identify which element you are dealing with.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

i'm pretty sure its b i might be wrong though!

give me abc and i will get it for u.