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The complete combustion of hydrogen, H2(g), to form H2O(l) at constant pressure, releases 285.8 kJ of heat per mole of H2(g). -------- H2(g) + 1/2O2(g) ? H2O(l) • What is the enthalpy of the reaction? • Is this reaction exothermic or endothermic? • Draw an enthalpy diagram for the reaction. Make sure to properly label axis, location of reactants and products, sign of ?H, and flow of heat Please explain this question in detail to me because i am really lost Please do not answer if you are just going to answer the question if you are going to post a retarded answer on how i should learn thing ...because i am trying to learn how to do this and i have been trying to work it out all night. And my teacher made this an open class question not a homework question but i need to learn this for a test.
Calculate the heat energy released when 14.1 g of liquid mercury at 25.00 C is converted to solid mercury at its melting point. Constants for mercury at 1 atm
why are we given a known and unknown hydrate. what is the point of having a known sample. why is it important. do scientists give is a more 'generic' name, if so, what would a scientist call the known
Moneybags was found dead on the floor of his study. Investigators found an open bottle of scotch on his desk, and a broken glass on the floor near his body
A compound A (C22H27NO) is insoluble in acid and base but reacts with concentrated aqueous HCl and heat to give a clear aqueous solution from which, on cooling, benzoic acid precipitates.
consider the following observations taken on successive cloudless autumn mornings. on the first day a considerable
what would the coefficent of Al(NO3)3 be in the balanced equation?
A 0.4600 g sample of carboxylic acid is burned in oxygen, producing 0.8202 g of CO2 and 0.3377 g of H20. Determine the empirical formula of the carboxylic acid.
A graduated cylinder contains 31.0 of water. What is the new water level after 38.0 of silver metal is submerged in the water?
At what point will the standard solution begin to deteriote after all the chemicals have been mixed? the answer should be in minutes
What is the procedure for the extractions (to MAXIMIZE THE YIELD) and volumes? (i.e. How much water, NaCl, sodium bicarbonate and in what order)?
chloride contain 75.27% ag calculatr the mass of silver chloride requiered to plate 215 mg of pure silver
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the energy of the wave.
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