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At 25 degrees Celsius (77 Fahrenheit) and standard pressure (101.3 kPa) one pound of helium would fill 2768 Liters (731) Gallons It depends on how big you want to fill the balloons, the pressure of the balloons the temperature and a range of other things.
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∙ 8y ago
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∙ 10y agoAt standard conditions:
22.4 Liters of air weighs approximately 29 grams
22.4 Liters of helium weighs 4 grams
29 grams - 4 grams = 25 grams
That means that each 22.4 Liters of helium provides a buoyant force of 25 grams. 22.4 Liters / 25 grams = 0.896 Liters/gram
There are 454 grams in 1 pound
454 grams/pound x 0.896 Liters/gram = 407 Liters/pound
If you hook 407 1-Liter helium balloons to the 1-pound object, it would neither sink nor float. To lift the weight, you'd need "more than 407 1-Liter balloons".
This presumes that the weight of the balloons is figured into the 1 pound. If not, you'll need to find the weight of the 407+ empty balloons.
Since you get the same result with one balloon with a capacity of 407 liters + 1 liter, I say again that the number of balloons is irrelevent unless you state their capacity as part of the question.
Wiki User
∙ 12y agoThe mass the balloons can lift depends on the mass of the air displaced by the balloons.
Mass lift-able + mass of balloons = total mass of air displaced.
Mass of balloons = Total Volume X Density of helium
Mass of air displaced = Total volume X Density of air.
Density of helium = 1.79 X 10^(-4) Kg/m^3 No: 0.1786 kg/m3 (0 °C, 101 kPa)
Density of air = 1.2 Kg/m^3 No: dry air has a density of 1.28 kg/m3 (0 °C, 101 kPa)
1 pound = 0.45 Kg
Volume = Mass lift-able/ (air density - helium density)
= 0.45/(1.2 - 1.79X10-4) = 0.38m^3. No: 0.454/(1.28 - 0.179) = 0.412 m3
You will need enough helium balloons to cover a total volume of about at least 0.4m^3. This assumes that the temperature of the helium and the air is room temperature. I don't know what sized balloons you are considering, but we can say that:
No. of Balloons = total volume/volume per balloon.
If you use roughly spherical balloons of radius 10cm, then the volume per balloon is about 0.004m^3, and the number of balloons needed is about 100. But as i said, without knowing the size of the balloons you intended, i cant really say how much you would need.
Wiki User
∙ 9y agoA normal helium balloon can lift approximately 14 grams. As a result, lifting 5 pounds (about 2268 grams), would require over 162 balloons. Note, however, that this is an estimate and may vary between different balloon types made by different manufacturers, as well as by how fully the balloon is inflated.
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∙ 9y agoThe weight of the balloons must equal the weight of the cup of water.
WH2O = ( 8.338 lbf/gal ) ( 1 gal / 16 cups )( 1.0 cup H2O ) = 0.5211 lbf
dAIR = ( 14.7 psia ) ( 28.97 lbm/lbmol )/ ( 10.73 psia- ft^3 / lbmol - R ) ( 529.7 R )
dAIR = 0.0749 lbm / ft^3 @ 14.7 psia and 70.0 F
wAIR = ( dAIR ) ( g / gc ) = 0.0749 lbf/ ft^3
WAIR = ( NB )( VB* ) ( wAIR )
Let VB* = 0.2 ft^3 per balloon
WAIR = WH2O = (NB ) ( VB* ) ( wAIR )
NB = ( 0.5211 lbf ) / ( 0.2 ft^3 /balloon ) ( 0.0749 lbf/ft^3 )
NB = 34.8 ~ 35 balloons <---------------
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∙ 14y agoit took 53 12" helium balloons to lift a pound, you have to add the weight of the string and balloons
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∙ 12y agoWiki User
∙ 14y agoyou need to give dimensions (volume), find the lift given by one cubic inch of helium and find out from there.
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∙ 12y ago125781 balloons
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∙ 13y ago9
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How many balloons does it take to lift a 190 pound man?
assuming that temperature is constant and that we're talking about regular party balloons (a "regular" 2-gram party balloon can hold ~ 16 grams of gas), you would need 6,156 baloons to hold your weight in equilibrium. you would need an amount greater than this to actually lift you (the more extra balloons, the faster the lift), and this is not accounting for the weight of the string. extrapolated from: http://malaysia.answers.yahoo.com/question/index?qid=1005123102737
How many foot pounds to lift a 2 ton elephant?
4,000 foot pounds of energy (work) for each foot highyou lift it off the ground,regardless of whether you do it with a lever, a pulley, a jack, a hydraulic lift, oryour bare hands.
How many balloons does it take to lift a house?
6 719 174.875 balloons or 6 719 175 balloons for a 100 000 lb house or45 360 kg home.This was for my grade 12 physics summative. Did pretty well ^^The answer above adds in the string (7.2 x10^-4 kg for 100 m of fishing wire) , rubber balloon(0.0029 kg) and helium weight, as well as temperature of 20 degrees Celsius and altitude of 0 above sea level.width and height of balloon is 0.13m and the length is 0.14 m.I neglected wind resistance.If you want to calculate it yourself in case your observations are different, read below. *** are the important equations.*** Fb= (101325(1-2.5577E-5•h)^5.2588 / R•T)•(4/3rlrwrh)•(g)
What is the gas that will make us floats in air?
There is no gas that can make humans float in the air naturally. However, helium gas is lighter than air and can be used to fill balloons, causing them to float.
How do balloons sink or float in the air?
In relation to the small balloons children are so fond a carrying, the balloon is lifted because it is filled with a lighter than air gas(helium/hydrogen). it falls when this gas leaks out over time.In relation to hot air balloons, the air is heated in the balloon causing it to rise(because hot air is less dense than warm). Over time the air cools and so the balloon falls. You can also expedite the rising of the balloon by jettisoning many of the weights that line the balloon.
How many helium balloons can lift 20 pounds frozen turkey?
30
How many helium balloons does it take to lift the Titanic?
10000000 helium balloons
How many balloons does it takes to lift 1 pound?
it took 53 12" helium balloons to lift a pound, you have to add the weight of the string and balloons
How many helium balloons can lift up a brick?
depends on how large the balloon is! ;D
How many helium balloons does it take to lift a 20 pound frozen turkey?
400
How many helium balloons does it take to lift a kilogram?
To lift about 110 pounds it could take any where from 100 to 150 balloons to lift a person, a lawn chair, food, and many gallons of water. A man by the name of Kent Couch from Oregon demestrated this for us by flying from his home all the way to Idaho. I would'NT try this unless you have a parachute of some kind of device to help you have a better landing. The Balloons could be about the average party balloons (large ones) that are about 11in in diameter. Now remember this is very dangerous and could even be lethal.I hope this helped you.Thanks for looking--Tiana5701
Why are most of the planets made of helium?
because so many kids have let go of their helium balloons , so the plantes just sucked in the helium from the balloons and that's why most of the plantes are made of helim :)
How many balloons will a small disposable helium tank fill?
25 Balloons (Approx.)(I might be wrong as I am not sure)
How many balloons do you need to make a chihuahua fly?
258 helium filled balloons filled to 34 psi each
How much can a helium balloon lift?
depends how big the helium balloon is and how many
How many helium balloons would you need to fly in the house?
5672-
How much helium is needed to lift an average human body?
Depends on the weight. Check the MythBusters website, they did an experiment on this.
