Question

8. Calculate the number of atom in
each of the following (Given: Atomic
mass of I: 127 u). a)254 u of lodine (1)
and b)381 g of lodine (1)​

Answer 1

Answer:

(a) Given mass/ Atomic mass

= 254/127 = 02 mole = 6.022 × 10²¹ × 2 = 12.044 × 10²¹

(b) Given mass/ Atomic mass

= 381/127 = 03 mole = 6.022 × 10²¹ × 3 = 9.066 × 10²¹

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