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| IronMass Forums Help bigDman with his Chemistry General Chat Discuss Help bigDman with his Chemistry in the New & Hot Topics forums; Okay my teacher is senial and cant teach and hasnt teached us this yet so i have no clue how to do it. He says i have to show work. ... |
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09-08-2005, 08:04 PM
| #1 | |
| is missing heavy pulls  Join Date: Apr 2005 Location: Maryland
Posts: 4,670
Recipes: 0 Rep Power: 186     |  Help bigDman with his Chemistry Okay my teacher is senial and cant teach and hasnt teached us this yet so i have no clue how to do it. He says i have to show work. If any one could help me i'd love you for ever(thats if you want me too :bed2: ) A ballon is Filled with hydrogen gas, density 0.090 g/l. The balloon when filled has a diameter of 100 cm. a) What mass of hydrogen will the balloon hold (the formula for voulme of a sphere is 4/3 pi r cubed)b) How much air will the ballon hold, if under the same conditions, air has a density of 1.29 g/l? I think the answer for a is 50 grams but im not sure
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09-08-2005, 08:38 PM
| #2 |
| Pro Stature Join Date: May 2005
Posts: 625
Recipes: 0 Rep Power: 10 | in case this is what you forgot STP is 22.4 Liters. if not, sorry.
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09-08-2005, 08:39 PM
| #3 | |
| is missing heavy pulls Join Date: Apr 2005 Location: Maryland
Posts: 4,670
Recipes: 0 Rep Power: 186 | well he hasnt really thought us anything whats STP ?
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09-08-2005, 08:43 PM
| #4 |
| Pro Stature Join Date: May 2005
Posts: 625
Recipes: 0 Rep Power: 10 | standard temperature and pressure- volume of all gases at standard Pressure and temperature. Standard Pressure is 1 atmospher, standard temperature is ... found on www.google.com
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09-08-2005, 08:51 PM
| #5 | |
| is missing heavy pulls Join Date: Apr 2005 Location: Maryland
Posts: 4,670
Recipes: 0 Rep Power: 186 | ehh i still dont get how to do the proble any more help would be great :bigthumbu
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Last edited by bigDman : 09-08-2005 at 09:17 PM. | |
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09-08-2005, 10:33 PM
| #6 | ||
| Pro Stature  Join Date: May 2005 Location: Canada
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Mass of H2 = 523.6L * 0.090g/L = 47.1g Mass of air = 523.6L * 1.29g/L = 675.4g Someone check my figures. That volume seems high to me. :umm:
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09-08-2005, 10:52 PM
| #7 | |
| is missing heavy pulls Join Date: Apr 2005 Location: Maryland
Posts: 4,670
Recipes: 0 Rep Power: 186 | Thanks brinn you really saved me and i re checked your answers and they seem right
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