Fa cup of coffee is at 90°c and a person with a body temperature of 36°c touches it, how will heat flow between them?

The heat flows between the two by the cup. The cup gives the coffee heat to the person and vise versa.

Hope this helps!

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