how many atoms are present in hundred gram sample of c12 atom
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Answer:
50.2*10^23 atoms
Explanation:
molar mass of c12 =12g
given mass=100g
moles of C=given mass/molar mass
=100/12
no.of atoms of C present= moles of C *N( where N is Avogadro's no.)
=100/12*6.022*10^23
=8.33*6.022*10^23
=50.16326*10^23
=50.2*10^23 atoms
ginnyshai45:
how many moles of CaCO 3 would weigh 5 gram
molar mass of CaCO3=100g and given mass=5g so, moles of CaCO3=5/100=1/20=0.05moles
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