Q3 of 7 Page 43

How many grams of silicon is present in 35 gram of silicon?

Gram atoms = number of moles of atoms

⇒ number of moles of silicon atom = 35


Atomic mass of a silicon atom = 28g


mass of 35 moles of silicon =35 × 28= 980


Hence 980 grams of silicon is present in 35-gram atoms.


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