How many molecules of white phosphorus (P4) are contained in 248 grams of the substance. (P=31)
Answers
Answered by
17
Molar mass of P4 = 4*31 = 124
Now,
no of moles = Given mass / Molar mass
= 248/124 = 2 moles
Number of molecules = Avogadro number* Number of moles
= 2*6.022*10^23 = 12.044*10^23 molecules
Now,
no of moles = Given mass / Molar mass
= 248/124 = 2 moles
Number of molecules = Avogadro number* Number of moles
= 2*6.022*10^23 = 12.044*10^23 molecules
Answered by
3
248 g of phosphorus = 248/31 = 8 moles
if 1 mole of phosphorus = 6.022×10^23
∴ 8 moles of phosphorus = 8×(6.022×10^23)
=4.8176×10^24
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