How much heat is transferred between the system and the surroundings when 32 moles of ethylene (C2H4) reacts with excess of hydrogen gas to produce ethane (C2H6)? Please specify if energy is release or absorbed by the system. (3 pt)

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

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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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