Calculate the amount of energy needed to convert 10g of ice from -20 °C to liquid water at 60 °C ice specific heat= 2.09 J/g°C
water specific heat= 4.18 J/g°C
steam specific heat= 1.84 J/g°C
Hfus= 6.02 KJ/mol
Hvap= 40.7 KJ/mol

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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