Chemistry, asked by awsomeme, 1 year ago

find the moles in
12.044 × 10 to the power 22 no. of neon atoms

Answers

Answered by TPS
5
1 mole of neon atoms contain 6.022×10²³ atoms

12.044×10²² atoms =  \frac{12.044 \times 10^{22}}{6.022 \times 10^{23}}\ moles = 0.2\ moles

awsomeme: the atomic mass of neon has no role in taking out d answer
awsomeme: ??
TPS: we are given the number of atoms..so atomic mass has no role now...
awsomeme: cud u explain again plz ?
TPS: the question is like "if you have 2 pens, how many dozens of pen do you have?"
TPS: what would you do?
awsomeme: unitary method
TPS: i don't know what unitary method is...
here is what you do...
you know 1 dozen is 12
so you divide 2 by 12....

similarly you know 1 mole is 6.022×10²³
so 12.044×10²² atoms = 12.044×10²² / 6.022×10²³ = 0.2 moles
TPS: ok???
awsomeme: thkz i got it
Answered by bhalaraneha
1
6.022 X 10∧23 atoms of neon atom   = 1 mole                
1 atom of neon                                 =1/ 6.022 X 10∧23 
12.044 X 10∧22  atoms of neon    = [(1/6.022 X 10∧23) x 12.044 X 10∧22 ]moles
                                                  =  2 X 10∧-1

awsomeme: ???
bhalaraneha: sorry
awsomeme: ok
bhalaraneha: what u say...
awsomeme: its correct
awsomeme: thnkz for helping
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