Aqueous solutions of compounds containing element are green. Element could be cobalt
B)
sulfur
C)
carbon
D)
sodium

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock