Grade 12th passPhysical Chemistry
please who can i calculate the amount of atom in 4.0 g of carbon? (c=12)
please who can i calculate the amount of atom in 4.0 g of carbon? (c=12)
3 Answers
Ravneet
Approved Tutor Answer8 Years agothe number of moles = given mass/molar mass
step 1: calculate the number of moles, that is 4/12 = 1/3
step 2: to calculate the number of atoms multiply by Avogadro number because a mole of substance contains Avogadro number of entities.
so answer is 1/3 X Na
MonishGayen
no. of moles of carbon =(given mass)/(molar mass)
=(4/12)NA =(1/3)*6*1023 =2*1023(approximately)
lets hope it helps you
Abhinav
4/12=1/3, therefore there is 1/3 moles of carbon
By unitary method
No of atoms in 1/3 moles is 1/3*avagadro number
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