About 2/3 of your body mass consists of water. calculate the volume of water in a 80kg person.?
2007-05-14 00:07:08 · 5 answers · asked by ramil e 1 in Science & Mathematics ➔ Physics
Mass of water in a person's body =2/3 of mass of person
Mass of water in a person of mass 80 kg=80x (2/3)=160/3 kg
Mass of water 'm'=160 / 3 kg
Density of water 'd' =1 gram / cc = 1000 kg / m^3
Volume of water 'V' = mass 'm' / density 'd'
Volume 'V' =(160/3 ) /1000 = 16 / 300 cubic meter
1 cubic meter = 1000 liter
Volume 'V'=0.05333 m^3= 53.33 liter
Volume of water in a 80 kg person =53.33 liter
2007-05-14 04:07:20 · answer #1 · answered by ukmudgal 6 · 0⤊ 0⤋
Question: Have you even tried to answer that homework question yourself before posting it up here to get someone to give you the answer on a plate?
You know the mass of the person, you know the proportion of that mass that is water, and you presumably know what the density of water is to allow you to calculate the volume. Just in case you don't I'll give you the fact that water has a density of 1 gram per millilitre, or 1kg per litre. Go crunch those numbers.
2007-05-14 00:16:59 · answer #2 · answered by Jason T 7 · 0⤊ 2⤋
80 times 2 divided by 3 gives 53.3 (repeating decimal). 80 times 1 (100 %) would give 80... 80 kg. 80 times (2/3 or 66%) is 53.3 To multiply a number by a fraction, first multiply the top of the fraction (the numerator) and divide by the bottom (denominator).
2016-05-17 21:26:09 · answer #3 · answered by ? 4 · 0⤊ 0⤋
80 x 2/3 = 160/3 = 53 1/3 kg or 53.3333 kg (to 4 dp)
2007-05-14 00:10:36 · answer #4 · answered by Doctor Q 6 · 1⤊ 0⤋
above working is exactly right, however question asked for volume. I would assume you are working at sea level, and therefore 1 kg of water takes up 1 liter. so 53 odd liters
2007-05-14 00:13:18 · answer #5 · answered by Patch 2 · 0⤊ 0⤋