Write how many atoms of each element there are in 3H3CN3Br2.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

Describe the function of the endomembrane system? what organelles are involved?