Why does copper oxide not dissolve in water?

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.

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

One similarity and one difference between an element and a mixture of elements