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For the reaction 3C2H2(g)---> C6H6(l) at 25 C the standard enthalpy change is -631 kj and the standard entropy change is -430 J/K. Calculate the standard free energy change at 25 C
How long will it take to deposit 0.00470 moles of gold by electrolysis of KAuCl4 (aq) using a current of 0.214 amperes? Which metal would be suitable to provide cathodic protection from corrosion for an iron bridge?
Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer s..
Find the amount of heat involved when 300.4 g of propane is burned with an excess of oxygen. C3H8(g) + 3 O2(g) ? 3 CO2(g) + 4 H2O(l) -->?H = -2219 kJ
Balance the following full redox reactions using the lowest integer coefficients, in basic conditions. NiO2(s) + Zn(s) ? Ni(OH)2(s) + ZnO22?(aq)
Hydrogen sulfide , H2S , has the characteristics odor of rotten eggs. if a sample of H2S gas at 759.0 torr and 29.0 c in a 3.00-l container is allowed to expand into an 11.0-l container
Explain how real gases differ from ideal gases. At what conditions do the variations become the biggest. At room conditions, if you know the condensation point for a series of gases, how will that allow you to predict which gases would vary most f..
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M
the vapor pressure of water is 25 mmHg: a) What is the pressure of the dry O2 gas? b) How many moles of O2 were produced? c) How many grams of KClO3 were produced
How do you make a supersaturated solution. How is this different than a "saturated" solution
Determine the number of grams of sodium acetate and the amounts in mLs of 6.00M acetic acid that you would need to make 50.00mL of a sodium acetate/acetic acid buffer solution at the pH equal to 5.00 in order to make a final concentration of 0.05M..
there are some given compounds ch3br rbf ch3oh co2arrange all these compounds in order of increasing boiling points and
Ethyl aceto acetate is first treated with sodium ethoxide using EtOH then reacted with 1,4 dibromo 2butene
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