what do you think will happen to the smoke from the incense if you hold it above the glass tube that is over the cold water?

the dependant variable is spilled water

the independent is the heat

l dont know l am s sorry

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!

if you need further assistance, let me know: )

~ trueboss72

the answers are

c and c