The table shows the temperature and pressure of five-liter samples of four different gases. Which two gas samples do not have the same number of molecules?

He2 & O2

Explanation:

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.

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