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The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the enthalpy of reaction for graphite going to diamond. Is this reaction exothermic or endothermic? What does it imply about the chemical bonding in diamond compared to graphite
The heat of vaporization of water =40.66 kJ/mol at 100 °C. Compute the quantity of heat that is absorbed/released when 9.00 grams of steam condenses to liquid water at the temperature of100 degree celsius.
Starting with 86.3 g NO and 25.6 g H2, find the theoretical yield of ammonia in grams
How much more soluble is AgCl in 1 Molar NH3 than in water?
The half-life of tritium (31H) is 12.3 years. If 55.0 mg of tritium is released from a nuclear power plant during the course of a mishap, what mass of the nuclide will remain after 49.2 years?
What is the pH of a 0.175-M potassium formate solution, KHCOO? The ionization of formic acid is 2.1 x 10^-4
A gas occupies a volume of 1.0 L at a temperature of 27°C and 500 torr pressure. calculate the volume of the gas if the temperature is changed to 60°C and the pressure to 700 torr
Methane diffuses approximately 2.43 times as fast as an unknown gas. Which of the following could be and unknown gas?
Phenolphthalein is one of the most common indicators. What are its colors in acidic and in basic solutions?
Using structural formula, how would you write the chemical reaction which explains how the product of the acidification reaction reacts with OH-. How would this explain the changes in solubility?
when 1.0g of salicyclic acid is used with 2mL of acetic anhydride, which compound is the limiting reagent?
caluclate the molecular mass of the compounds of Caffeine and Epinephrine. Round to the hundredth's place.
Considering the electron configuration of aluminum, 1s2s^22p^63s^23p^1, which of the following represents the valence electrons only:
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