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Given that delta r H = 40.67 kj/mol for vaporization of H20 at 100 degrees celcius, what is delta S tot for vaporization of 1 mol of water at 1 bar pressure at 125 degrees celcius? Is this process spontaneous?
A balloon is partly inflated with 480 liters of helium at sea level where the atmospheric pressure is 996 mbar.The balloon ascends to a altitude of 3000 meters.
What volume (in mL) of 0.220 M NaOH should be added to a 0.135 L solution of 0.028 M glycine hydrocholoride
A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
Identify the alkaline Earth metal. Express your answer as a chemical formula. Write the formula for the metal hydride. Express your answer as a chemical formula.
Pinacol (2,3-dimethyl 2,3-butanediol) gives a mixture of pinacolone (3,3-dimethyl-2-butanone) and 2,3-dimethyl 1,3-butadiene by treating with acid.
suppose 45.0g of water at 85 C is added to 105.0 g of ice at 0 C. The molar heat of fusion of water is 6.01 kJ/mol, and teh specific heat if water is 4.18 J/g C. on this basis of these data (a) what will be the final temperature of the mixture and..
What is the molar mass of a covalent compound if 0.486 g of it is dissolved in 25.0 mL of water and produces a freezing temperature
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq)
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
A plot o f the reciprocal concentration of chemical A versus time yielded a straignt line with a slope
Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 375 of insulin at a concentration of 50.0 . What is the total mass of insulin in the bottle?
At what temperature would the population of the first rotational level of HCl be 1/e times the population of the ground state? Rotational constant for HCl, B, is equal to 10.59 cm-1.
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