Which of the following statements is true about ionic and covalent bonding? I--One or more pairs of electrons are shared in covalent bonding
II--Ionic bonding results in the formation of molecules
III--Covalent bonding produces separate charge particles
IV--Ionic compounds are composed of metallic and nonmetallic elements
V-- There is a sea of free moving electrons in ionic bonding

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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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.