Question

Galvanized nails are iron nails that have been plated with zinc to prevent rusting. the relevant reaction is zn2 (aq 2e??zn(s for a large batch of nails, a manufacturer needs to plate a total zinc mass of 3.20 kg on the surface to get adequate coverage. part a how many moles of zinc are in 3.20 kg of zinc?

Answer 1

1kg=1000g
3.20kg=?
now;
3.20×1000÷1=3200g
then;
number of moles=mass÷molarmass
number of moles=3200÷(2×65.4)
number of moles=3200÷130.8
number of moles=24.46moles.