27.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/oC mol) is heated to 94.2 oC and dropped into a coffee cup calorimeter containing water initially at 19.9 oC. The final temperature of the water and aluminum mixture is 23.3 oC. Calculate the mass of water in the calorimeter. The specific heat of water is 4.184 J/g oC.

i believe it is a.) released into

explanation:

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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