1 mole = 6.022*10²³ molecules

0.1 moles = 0.1* 6.022* 10²³

= 6.022*10²² molecules

1 molecule of sulphur contain 8 atoms .

no. of atoms = 8*no. of molecules

= 4.8176*10²³ atoms

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane