Deuterium is an isotope of hydrogen (H) that has: A. 1 proton and 1 neutron
B. 1 proton and 2 neutrons
C. 1 proton and O neutrons
D. 2 protons and 1 neutron

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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.

What is the work done by the electric force to move a 1 c charge from a to b?