Physics i.e science
posted by Abbie .
A density bottle has a mass of 35g when empty, 85g when filled with water and 75g when filled with kerosene. Calculate the density of kerosene in g/cm3.

assume the volume is V
density water=85/V
V=85/densitywater
density kero=75/V
density kero=75*densitywater/85
but density water=1gm/cc
so do the figuring. 
YES

mass of bottle=35
mass of water=8535=50g
mass of kerosene=7535=40g
therefore,density of kerosene=
mass of kerosene/mass of water=
40g/50g= 4g/5g=1.15
ANS=1.15 g/cm3