Calcium has six naturally occurring isotopes : Calcium 40, Calcium 42, Calcium 43, Calcium 44 , Calcium 46, and Calcium 48. Based on Calcium's reported atomic mass (40.078) , which do you think is the most abundant in nature ? Please Explain why

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

What will most likely happen when two bromine atoms bond together?