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A calorimeter contains 27.0 grams of H2O at the temperature of 14.5 degree Celsius. When 1.40 grams of a substance that has a molar mass = 46.0 is mixed, it dissolves via the reaction and the temperature of the solution increases to 26.5 degree Celsius.Compute the enthalpy change, , for this reaction per mole of .
(Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] )
Determine the phase composition and temperature when equilibrium is reestablished?
With respect to the corrosion of steel in concrete, explain the significance of the following terms: carbonation of concrete, passivity of steel, electrical resistivity of concrete, state of oxidation of iron.
Compute mole fraction of caffeine(C 8 H 10 N 4 O 2 ), the molarity of the solution
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
What mass of Au is produced when 18.6 ampere of current are passed through a gold solution for 29.0 minutes.
Find out the required pressure to compress 180 liters of N at 1.0 atm into a tank whose volume is 34 liters.
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
Determine how many atoms there are in 1 gallon using your knowledge of mole calculations and unit conversions. Assume that the molecular formula for gasoline = C6H14 ,the density of gasoline =0.85 grams/mL
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
Have you observed that when you spill water over your skin on a hot day it will cool you down but if you spill vegetable oil in place of water it will not cool you down give explanation for this difference?
Question enthalpy and entropy values are given and were asked to find boiling point of mercury
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
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