Answer:-
Given:-
No. of moles of pure aluminium = 4.66 moles
As we know that a mole is defined as the amount of substance that contains the same no. of particles as the number of atoms in exactly 12 g of C-12. A mole is a basic unit of the amount or quantity of the substance that may be atoms , molecules , ions or groups of ions (such as in salt). Its also be defined as the amount of a substance containing elementary particles such as atoms , molecules , ions or groups of ions (such as in salt) equal to the Avogadro's number i.e 6.023 1023 . e.g.
1 mole Na = 23 g Na = 6.023 1023 Na atoms
1 mole O2 = 32 g O2 = 6.023 1023 O2 molecules
1 mole Cl- = 35.5 g Cl- = 6.023 1023 Cl- ions
therefore
Also we know that
1 mole pure aluminium (Al) = 27 g Al contained = 6.023 1023 Al atoms
So
1 mole pure aluminium (Al) contained = 6.023 1023 Al atoms
then
4.66 moles pure aluminium (Al) contained = 4.66 6.023 1023 Al atoms
4.66 moles pure aluminium (Al) contained = 28.0672 1023 Al atoms (i.e the answer)
estion 2 of 3 > How many atoms are in 4.66 mol of pure aluminum? Al...
a) How many atoms are in 92.2 g of pure aluminum? b) How many grams of carbon, C, would contain the same number of atoms as 39.948 g of argon, Ar? c) How many grams of S are in 785 g of SO2?
Example: How many moles of oxygen atoms are there in 0.723 moles of aluminum nitrate, Al(NO3)3?
viies and Due Dates > HW 3 nment Score: 1100/2500 estion 12 of 25 > How many total atoms are in 0.520 g of P,0,? Enter numeric value total atoms: about us careers privacy policy terms of use
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