Observe: click reset. select the gas collection setup. chemists use this apparatus to collect any gases produced in the reaction. from the reaction flask, gases travel through a long tube and into a cylinder of water. as gases bubble into the cylinder, the water is displaced (removed) until the cylinder is filled with gas. click play and observe the cylinder. was any gas produced in the reaction? [ ]

8 carbon atoms forming single bonds with 18 hydrogen atoms; a triple bond exists between the third and fourth carbon atom from the right

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.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.