***URGENT PLEASE Select all of the bases listed * Bleach
NaOH
H2SO4
HCl
Ammonia
HF

(if you are confused COMMENT it please! I don't want to have to keep repeating because people are answering that they are confused.

Ammonia

AmmoniaNaOH

Bleach

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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.