A Styrofoam ball has a mass of 10.7 g and when completely submerged can displace 178 mL of water. What is it's density?

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.

po-215 i got it right on the quiz

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;