Which of the forces of molecular attraction is the weakest?

How does one determine the number of core electrons an atom has? O A. Subtract the atomic number from the atomic mass. O B. Subtract the group number from the atomic number. O C. Add the atomic number and the number of valence electrons. O D.

You have 4.872 x 1034 atoms of Copper. How many moles is this? 7.666 x 10^32 mol 2.933 x 10^58 mol 1.237 mol 8.093 x 10^10 mol

For most places on earth, what is the time difference between two low tides? A. about 12 hours B. about 24 hours C. once a month D. once every three months

The combustion of propane may be described by the chemical equation C 3 H 8 (g) + 5 O 2 (g) ⟶ 3 CO 2 (g) + 4 H 2 O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O 2 (g) O2 (g) are needed to completely burn 17.9 g C 3 H 8 (g) ?

Which element has the smallest radius? a. fluorine b. iodine c. chlorine d. bromine

What do dipole-dipole forces do? A. Replace covalent bonds with hydrogen bonds B. Turn nonpolar molecules into solids C. Hold polar molecules together D. Hold nonpolar molecules together

As the moon revolves around earth, it also rotates on its axis. Why is it that the same side of the moon is always visible from earth

The SI unit for quantity of radioactive materials is:

If you choose to wear loose clothing, large or dangling jewelry, or contact lenses to lab, which of the following statements best represents how you should proceed? A.

Which of these elements exists as a solid at room temp and pressure? Chlorine, bromine and iodine. Why?