Question

A piece of iron weighs 44.5gf in air,39.5gf in water and 49.3gf in paraffin Calculate the density of Iron and the density of Paraffin

Answer 1

 

there is probably a mistake in teh given number for weight in paraffin liquid.  It is 40.3 gf rather than  49.3 gf

Relative density of  iron =  weight in air / (weight in air - weight in water)
             = 44.5 gf / (44.5 - 39.5) gf = 8.9
density of iron = 8.9 * 1000 kg /cubic meter = 8900 kg/ cub meter

relative density of  paraffin
    = (weight of iron piece in air - weight in paraffin) / (weight in air - weight in water)
   = (44.5 - 40.3 ) / ( 44.5 - 39.5)
   = 4.2 / 5 = 0.84

density of paraffin liquid =  840 kg/cubic meter

Answer 2

Answer:

Paraffin wax is a white or colorless soft, solid wax. It's made from saturated hydrocarbons. It's often used in skin-softening salon and spa treatments on the hands, cuticles, and feet because it's colorless, tasteless, and odorless. It can also be used to provide pain relief to sore joints and muscles.