The number of atoms present in 11.74 g of nickel sample is 1.2 × 10²³.
Avogadro's number is the number of entities present in one mole of any substance and its value is equal to 6.022 × 10²³.
Given that mass of nickel sample = 11.74g
Atomic mass of nickel sample = 58.69amu
Moles of this sample will be calculated as:
n = 11.74g / 58.69g/mol = 0.200 moles
No. of atoms in 0.200 moles = 0.200 × 6.022 × 10²³ = 1.2 × 10²³
Hence, required no.of atoms are 1.2 × 10²³.
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