Question

calculate the number of atoms in 100 gram of calcium

Answer 1

★ Hi , there !!★

here is your answer !!


mole = mass / molecular mass


Ca= 40


given mass = 100


mole = 100 / 40 × 6 .22 × 10 ²³ particles


number of Ca atom = 1






=> 5 / 2 × 6.22 × 10²³. × 1



5 /2 × 6.22 × 10²³ atoms




hope it helps you dear !!


thanks !!

Answer 2

bro we have

no of moles of calcium =100÷40=2.5mol


no of atoms = no of moles×avagadro no n×no of atoms

no of atoms =2.5×6.022×10^23×1

=15.055 ×10^23 atoms

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