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Question - 4Fe(s) + 3O2(g) --> 2Fe2O3(s)
Calculate the energy released by the reaction when a 55.8 g sample of iron reacts completely with 1.00 mole of oxygen. The enthalpy of formation of Fe2O3(s) is -826. kJ*mol-1
I am not able to determine the correct answer for the above question please helps me to get the correct answer
A sample of wood since an egyptian mummy case gives a 14-C count of 9.4 counts per minute per gram of carbon. Explain how old is the wood? The initial decay rate of 14-C is 15.3 cpg/g C as well as the half-life is 5730 years
we were taught about effective nuclear charge as a result ofshielding but not taught how to calculate it. so my
Mass(volume)of cold water:75.0g Temperature of cold water: 23.0 degree celsius Mass(volume) of hot water: 75.0g Final temperature: 41.1 degree celsius find the temperature change and the calorimeter constant.
Question- Draw the molecular orbiatal diagram for 1,3-butadeine showing in-phase and out-of phase overlap and indicate thier energy levels and the number of electrons in each and indicate which one is the HOMO and which one is LUMO
Does FADH2 have a thermodynamic tendency to reduce coenzyme Q at pH 7. Explain why.
Explain how many grams of salt are needed to make 575 g of saltwater that is 36.0% salt by mass
Pheromones are compounds secreted by the females of many insect species to attract males. One of these compounds contains 80.78 percent C, 13.56 percent H, and 5.66 percent O. A solution of 1.00 g of this pheromone in 8.50 g of benzene freezes at ..
If 34.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.640 g precipitate, what is the molarity of lead(II) ion in the original solution?
the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
a student in lab has 3.00 g of pure n2 in 0.541 g pure h2. the reaction happens following this equation n2g 3h2g rarr
25.0 ml of ethanol density 0.789 gml initially at 7.4degc is mixed with 32.1 ml of water density 1.0 gml initially at
The equilibrium constant Kc for this reaction is 1.2 102 at 150°C. What is the direction (forward or reverse) needed to attain equilibrium at 150°C
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