Question

The no. Of atoms in 0.05g of water

Answer 1

m = 0.05g

M of H2O = 1 ×2 + 16 = 18g

no of moles = m / M

= 0.05 / 18

= 0.002 moles

No. of atoms = 0.002 × 6.022 × 10^23

= 12.044 × 10^20 atoms


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