How much 0.3MMgCl2 solution in liters will completely precipitate the Ag ion in 0.7L of 0.16MAgNO3 solution

i believe the answer is a.

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.

yes

ya te ayud espera