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Consider the following table of thermodynamic data. All values are tabulated at 250C. Substance deltaGf0 (kJ/mol) deltaS0 (J/mol.K) C2H2 (g) 209 201 C2H4 (g) 68 219 C2H6 (g) - 33 230 H2O (g) - 229 189 C2H5OH (l) - 175 161 The value of deltaS0 for the following reaction is - 233J/K at 250C. What is the entropy of H2 (g) at 250C? C2H2 (g) + 2H2 (g) ----> C2H6 (g) a.131 b.204 c.102 d. 262
An unknown compound contains only carbon, hydrogen, and oxygen (C x H y O z). Combustion of 5.50g of this compound produced 8.07g of carbon dioxide and 3.30g of water.
44.0 mL of 0.140 M and Na2SO4 and 25.0 mL of 0.160 M KCl Indicate the concentration of each ion present ?
What mass of iron is needed to supply the energy required to warm 15ml of water from 23 C to 37 C.
Four aldehydes and four hydrazines were used to explore hydrazone antibacterial activity in a combinatorial technique. How many reactions and antibiotic screenings would have been required to carry out this analysis in a non-combinatorial fashion?
What is the maximum amount, in kg, of ethanol that can be produced when 2.62 kg of ethylene (C2H4) and 0.0684 kg of steam are placed into the reaction vessel
To obtain the same antifreeze protection requires 76 of propylene glycol to replace each 62 of ethylene glycol. Calculate the mass of propylene glycol required to replace 7.00 of ethylene glycol.
A 53.6 gram sample of an unknown substance contains 11.5 grams of carbon. What is the percent by mass of carbon in the compound?
An engineer is designing a chlorine contact chamber to disinfect poultry-processing wastes. (Note these wastes are often contaminated with the pathogenic bacteria Salmonella). She can design the system to use chlorine gas (equivalent to using HOCl..
Predict the order for increasing binding energies of the C(1s) electron for the following compounds giving your reasoning.
When 34.1 g of lead reacts with 6.81 L of oxygen gas, measured at 1 atm and 25.0 degree C, 36.1 kJ of heat is released at consstant pressure. What is DeltaH for this reaction
What mass of ice at 0C must be added to 45g of water at 20C to cool it to the final temperature of 10C?
What does the angular momentum quantum number determine? Check all that apply. A.) the overall size of an orbital B.) the energy of the electron on the outer shell C.) the possible number of electrons on particular orbital D.) the energy of an orb..
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