What was the initial temperature of ethylene glycol
What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol =2.42 J/g·K) if a 26.3 g sample of ethylene glycol, a car radiator coolant, loses 692 J of heat.
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A sample of iron ore which is having 3.33-g, transformed to a solution of iron(II) sulfate, FeSO4, and this solution is titrated with the 0.150 M K2Cr2O7 (potassium dichromate).
Determine the concentration of the Na2S2O3 solution if the 36.30 mL of a0.1100 M I2 solution react exactly with a 100.0 mL sample of the Na2S2O3 solution.
A 1.345-g sample of a compound of oxygen and barium was dissolved in the hydrochloric acid to give a solution of barium ion, which was then precipitated with an excess of potassium chromate to give the barium chromate, BaCrO4 which is having 2.012
Suppose a sodium hydroxide solution is usually standardized by titrating a pure sample of potassium hydrogen phthalate (KHP), an acid with one acidic hydrogen and a molar mass of 204.22 g. It takes 36.04 mL of a sodium hydroxide solution to titrat
When at 30. °C the 121 mL water is mixed with the 63 mL water at 84°C, determine the final temperature assume that no heat is lost to the surroundings and that the density of water is 1.00 g/mL.
Sodium chlorate decomposes to produce the oxygen and sodium chloride gas at the elevated temperatures. A sample of impure sodium chlorate which is having 0.8765 g was heated until the production of oxygen gas ceased.
A sample of an unknown acid which is having 2.20 g (empirical formula = C3H4O3) is dissolved in the 1.0 L of water. A titration needed the 25.0 mL of 0.500 M NaOH to react totally with all the acid present.
Determine the activation energy for the decomposition of O2 by the reverse reaction if the activation energy for the reaction O +O3 ®2O2 is 25 kJ/mol, and the enthalpy change is DH =-388 kJ/mol.
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