If two atoms are bonded with a bond energy of 455 kJ, what must be done to break the bond?

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.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a