Why does the offspring have identical inherited traits as the parent?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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.

Nan element’s square on the periodic table, the number with the greatest numerical value represents the