Calculate the fraction of atom sites that are vacant for silver at 552°c. assume an energy for vacancy formation of 0.63 ev/atom.

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

Once similarity and one difference between a mixture of elements and a mixture of compounds