PLEASE ANSWE

What happens if a positively charged rod is brought near a neutrally charged balloon?

A. Nothing will happen until the two objects touch.
B. Electrons in the balloon move closer to the rod.
C. Electrons in the rod move closer to the balloon.
D. Protons in the balloon move closer to the rod.

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.