Which of the following gases do you expect to be used up by respiration? carbon dioxide
oxygen
methane
carbon monoxide

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

1. they vary with a higher number because boiling is way hotter than melting

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72