Question

What is the mass of 1 8 10^22 molecules of blue vitriol?

Answer 1

______here is ur answer____
number of moles=number of molecules/avagadro numbers
number of moles=18×10^22/6.023×10^23
number of moles=2.988×10^22_23
number of moles=2.988×10^_1
number of moles=0.2988mol
Now
number of moles =mass/molar mass
mass=number of moles×molar mass
molar mass of blue vitriol =159.6g/mol
mass=0.2988×159.6
mass=476.97g
_____hope it helps u___
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