Question

1. CALCULATE THE NUMBER OF MOLES IN 12.044 x 10 power 25 atoms of phosperus.

Answer 1

no. of moles = no. of particles / avogadro no.
                     =12.044 x 1025 / 6.022 x 1023
                     =2 x 100 
                     =200 moles of phosphorus.

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