Answer:

Step-by-step explanation:
Weight of water = 0.75 - 0.25 = 0.5 N
Mass of water = 0.5/10 = 0.05 kg
Hence volume of water is 0.05/1000 = 0.00005

Weight of alcohol = 0.65 - 0.25 = 0.4 N
Mass of alcohol = 0.4/10 = 0.04 kg
Density of alcohol = 0.04/0.00005 = 800
