The half-life of uranium-235 is 700 million years. If there are 2000 g of uranium-235 in the original sample, what happens after 2100 million years have passed? Select all that apply. A.
One half-life has passed.

B.
500 g of the original sample remains.

C.
Two half-lives have passed.

D.
250 g of the original sample remains.

E.
125 g of the original sample remains.

F.
Three half-lives have passed.

Electrons are emitted

A, it is falling action my have a good day

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.