What volume of gold would be required to have a mass of 250.9g? If a gold bar has a volume of 13mL, how many gold bars would this be?

What is the correct lewis structure for chloroform chcl3

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 change to the system wood cause the freely-moving piston to lower?