jetblackcap
20.09.2020 •
Chemistry
Calculate the number of moles for 12.044*10^23 number of helium atoms
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Ответ:
Explanation:
number of moles=number of particle (atoms)/avogadro number (NA)
we know that avogadro number is equal to 6.23*10^23
given number of atoms=12.044*10^23
therefore
moles=12.044*10^23/6.23*10^23=1.9=2
Ответ:
d
Explanation: