How much energy (kJ) is required to change 0.18 mole of ice (s) at 0 °C to water (l) at 0 °C?

can you attach a picture of the lettuce? : )

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