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calculate delta G foor the combustion of ethane: 2C2H6(g) + 7O2(g) = 4CO2(g) + 6H2O(l)
Write thermochemical equations for the decomposition of one mole of sodium fluoride into the elements in their stable states at 25 degrees celcius at 1 atm.
Indicators can be used to estimate the pH value of soultions. To determine the pH of a 0.01M weak acid (HX), a few drops of three different indicators are added to separate portions of HX. The resulting colors of the HX solution are below.
A young child grows rapidly, with high levels of cell division and high energy requirements. If you were planning the child's diet, which food groups would you emphasize, and why? Which good groups would you deemphasize, and why?
An antacid tablet contraining calcium carbonate as an active ingredient required 9.53 mL or 0.0956 M H2S04 for comlete neutralization.
What is the normality of sulfuric acid solution which contains 6.64 g of H2SO4 in 837 mL of solution provided that the reaction involved
A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.
A 15.0--mL unknown sample of aqueous acetic acid, CH3COOH(aq), was titrated using 0.800 M NaOH. If the titration endpoint was found to be 20.0 mL.
Rate constant at a temperature of 37.8 Celsius is precisely three times that at 25 Celsius. Determine the activation energy in kJ/mol
If 1.0 l of 0.10 M sodium phosphate is mixed with 1.0 l of 0.10 M magnesium nitrate, magnesium phosphate is produced. Calculate the concentration of each ion when the reaction is finished and the mass of precipitate.
with this balanced equation of copper carbonate calculate the concentration of copper in solution
Determine the freezing point and calculate the final temperature if initially this iron nail was at temperature of 28 degree Celsius?
A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure (in torr) of each gas in the mixture.C
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