Question

The number of molecules in 0.64gm of SO2 are

Answer 1

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Molar mass of SO₂ = 64 g/mol

No. of moles = 0.64/64 = 0.01 moles

So, now, no. of molecules = 0.01 x 6.022 x 10²³ = 6.022 x 10²¹ molecules