Question #1d85e

1 Answer
Milan S#
Dec 5, 2017

#rArr1.8 N_a#
#rArr9.5N_a#
#rArr2.8N_a#

Explanation:

1 mole of an atom or molecule contain Avogadro number of atoms or molecules {6.022#xx10^23#}

1.8 mole of Ni atoms contain 1.8#xx##N_a#{Avogadro} number of atoms.

Similarly 9.5 moles of #(MgOH)_2# contain 9#.5N_a (MgOH)_2# formula units

And 2.8 moles of Li contain #2.8N_a# number of Li atoms.

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