Determine the mass of butane gas that was released from the lighter and collected in the gas collection tube. use the given below to derive the answer.
given:
mass of lighter before (g)
32.105 g
volume of butane gas collected (ml)
90. ml
mass of lighter after (g)
31.844 g
room temperature (k)
297 k
air pressure (atm)
1.2 atm
so (90)(1.2) = (297)

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

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