How many grams of water could be raised from 25 C (room temp) to 100 C (boiling point of H2O) by the amt of?
Ivory asked:
energy released in the formation of 1 mol H2 from hydrogen atoms? The bond energy of H2 is 435 kJ/mol
energy released in the formation of 1 mol H2 from hydrogen atoms? The bond energy of H2 is 435 kJ/mol
The answer is 1400g
But i dont know how they got that. What formula or conversion factor are we sopposed to use. Im so confused. Please help 
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The conversion factor that is used to change mass to moles is?
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How many grams of water could be raised from 25 C (room temp) to 100 C (boiling point of H2O) by the amt of?
about 1 year ago - 1 comment
Ivory asked: energy released in the formation of 1 mol H2 from hydrogen atoms? The bond energy of H2 is 435 kJ/mol
The answer is 1400g
But i dont know how they got that. What formula or conversion factor are we sopposed to use. Im so confused. Please help Website content
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Hydrogen Generators for Cars; What are They and How Do They Work?
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mike legg asked: When I first heard about hydrogen generators for cars and hydrogen car kits, I thought that people were talking about some futuristic gadget or rocket car, perhaps from the latest science fiction blockbuster at the movies. I never believed that it would be possible to run cars on water which is what More >
Chemistry Help! Grams to liters conversion?
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so there is .7777 grams of hydrogen or h2 or .385 moles. it needs to be converted into liters.
At room temperature and pressure the volume of a mole of any gas is 24 liters.
Please help,
thanks
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Why can’t you buy do it yourself H2O conversion kits for your cars?
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schizm5 asked: There’s thousands of people all over the internet and you tube showing how they converted their own cars to run on water, and I’m not talking about hydrogen fuel cells. Why aren’t there do it yourself kits for sale on every corner?Create a video blog
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Chemistry Question. combustion reactions?
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ranadeshaun asked: A ________ is used to determine the composition of compounds containing the elements ______ and ______.
A) conversion factor; hydrogen; oxygen.
B) combustion apparatus; hydrogen; carbon
C) solvent; carbon; oxygen
D) solvent; hydrogen; carbon
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______________________________________________________
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A hydrogen fuel cell stack(terminal voltage 9V) has an internal resistance of 1 Ohms. It is connected to hydrogen and oxygen reservoirs. It is being charged using a battery of 11 V terminal voltage and 1 Ohms internal resistance. a. How many moles Hydrogen are produced per second? How long does one have to charge to store 10kJ in chemical energy (the energy content of hydrogen is 242 kJ/mol of Hydrogen)? b. What is the conversion efficiency from chemical energy in the battery into chemical energy of hydrogen? c. Now the fuel cell is used as a source to operate a device w/ 5 Ohms resistance. What is the power consumed by the device? What is the conversion efficiency from Hydrogen-chemical-energy into energy consumed by the device?
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Hydrogen Car Kits, Can You Run a Car on Water?
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1. Gasohol contains ethanol (C2H5OH), which when burned reacts with oxygen to produce CO2 and H2O. How much heat is released when 12.5 g of ethanol burns? C2H5OH + 3O2 –> 2CO2 + 3H2O delta H= -1235 kJ AND 2. Hydrogen gas and fluorine gas react to produce hydrogen fluoride. Calculate the heat change (in kJ) for the conversion of 15.0 g of hydrogen gas to hydrogen fluoride gas at constant pressure. H2 + F2 –> 2HF deltaH= -536 kJ
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about 2 years ago
= Entalpía (Cp x T x m) / (1000 x n) Cuando entalpía es de 435, Cp es 4,18 (densidad de energía de agua), T es el cambio de temperatura (100 – 25), m es la masa de agua (el lo que quiere), n es el mol de gas de hidrógeno (1) . Por lo tanto, volver a organizarse es para: m = (entalpía x 1000 x n) / (Cp x T) La respuesta es 1387g = 1400g (2 s.f.)