When water and hydroxide approach, will the two oxygen atoms attract or repel one another? they will attract by bonding like the oxygens in hydrogen peroxide, h-o-o-h. they will attract because they both carry negative charges. they will repel because they both carry negative charges. they will repel because atoms of the same element always repel?

They will repel because they both carry negative charges.

Explanation:

When water approaches hydroxide ions, the oxygen atoms will repel each other. Water on its own is a polar covalent compound. It has a positive and negative end.

Hydroxide is radical that is negatively charged. It consists of oxygen and hydrogen atoms.

The like charges on the oxygen atom will repel one another as a general rule of attraction. The oxygen will have more affinity for the hydrogen.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.