Question

find the mass of 3 moles of
C2 H5 OH

Answer 1

n ( no: of moles ) = 2

M ( Molecular mass ) = (12 * 2 ) + ( 1 * 5 ) + ( 16 ) + ( 1 )

= 24 + 5 + 16 + 1

= 46 u

Therefore,

mass ( m ) = n * M

= 3 * 46

= 138 g

Answer 2

hope it helps you dear mate