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A 14.1-mL sample of 0.996 M NaOH is mixed with 32.3 mL of 0.905 M HCl in a coffee-cup calorimeter (see Section 6.6 of your text for a description of a coffee-cup calorimeter). The enthalpy of the reaction, written with the lowest whole- number coefficients, is ??55.8 kJ. Both solutions are at 21.6??C prior to mixing and reacting. What is the final temperature of the reaction mixture? When solving this problem, assume that no heat is lost from the calorimeter to the surroundings, the density of all solutions is 1.00 g/mL, the specific heat of all solutions is the same as that of water, and volumes are additive.
What is the difference between an Indicator electrode and a Reference electrode in a potentiometric titration
How much energy (in Joules) is required to heat 14.89 g of water from 11.9 oC to 49.2 oC ? Use 4.184 J/goC as the specific heat capacity of water.
Calculate the pH during the titration of 30.00 ml of 0.1000 M KOH with 0.1000 M HBr solution after the following additions of acid.
A piece of solid carbon dioxide, with a mass of 7.8g is placed in a 4.0L otherwise empty container at 27 deg C. What is the pressure in the container after all the carbon dioxide vaporizes?
If the solubility of calcium phosphate is 3.41*10^-5 g/l. How many liters of water are required to dissolve 1g of calcium phosphate
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100. g of H2O. Kf for H2O = 1.86°C/m.
Durning the synthesis of Aspirin from Methyl salicylate we perfom a recrystallization. How do I relate the % yield of each compound to the efficacy of the recrystallization technique?
The solutions mixed together are 51.7 mL of 0.110 M hydrochloric acid, 102.4 mL of 0.213 M of nitric acid, 500.8 mL of 0.0101 M calcium hydroxide, and 201.7 mL of 0.114 M rubidium hydroxide. Did the acids and bases exactly neutralize each other?
Propose a method to synthesize (2R,3R) 2,3-epoxyhexan-1-ol using ethanol,methanol,co and CN- as carbon sources
Determine the solubility of N2 in water exposed to air at 25 C if the atmospheric pressure is 1.2 atm. Assume that the mole fraction of nitrogen is 0.78 in air and the Henry's law constant for nitrogen in water at this temperature is 6.1 10-4 M/at..
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
A sample of hydrogen gas occupies 15.8 L at STP. How many moles of the gas are present?
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