Question

calculate the number of atom ineach of the following 46.8 gram potassium(atomic mass k=39)​

Answer 1

Answer:

no of moles of K = 46.8/39 = 1.2 moles

now number of K atoms in 1.2 moles = 1.2 × 6.023× 10²³

= 7.23 × 10²³ atoms

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