Copper oxidizes in air at 1000 degree Celsius with parabolic kinetics, forming a surface film of Cu2O. The parabolic rate constant at this temperature, kp, is 2.1*10-6kg2 /m4 s. What is the mass gain per unit area of the copper surface after an hour

a

explanation:

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

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.

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