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A calorimeter contains 22.0mL of water at 12.0 Celcius. When 2.30g of (a substance with a molar mass of 56.0 g/mol ) is added, it dissolves via the reaction X(s)+H_2O(l) --> X (aq) and the temperature of the solution increases to 25.5 Celcius.
Calculate the enthalpy change (in kJ/mol),delata h , for this reaction per mole of X .
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 J/(g \degrees Celsius}) and 1.00 g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.
Will the parietal pressure of SO3 increase, decrease, or remain the same? Be sure to support your answer with CLEAR calculation.
Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps.
Please do not respond to this post as this is a duplicate post. The same question has been posted twice by mistake and there is no need for a response to this.
calculate the estimated ratio of the protonated form of acetylsalicylic acid to the deprotonated form of aspirin at equilibrium in the stomach? acetylsalicylic acid(Aspirin) is a weak acid with a pKa = 3.4, Stomach acid has pH = 1.4.
Complete the following equation that illustrates a Brønsted-Lowry acid/base reaction. Phases are optional.
Calculate the specific heat of the metal and its approximate atomic mass. Suggest a name for the unknown metal. Specific Heat: atomic mass: element
In the reaction below, 7.57 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 11.8, calculate the equilibrium pressure of Br2.
A sample of argon has a volume of 205 cm3 when its temperature is -44.0 oC and its pressure is 712 mm of Hg. What would be the volume of the argon at STP?
For each of the following processes, decide whether it is spontaneous or non-spontaneous.
What is the concentration of an NaOH solution that requires 50.0 ml of a 1.25 M H2SO4 solution to neutralize 78.0 ml of NaOH?
When hydrogenating methyl trans-cinnamate or dimethyl fumurate using 5% Pd/C at room temperature, how will you determine if the reaction is chemoselective
the specific heat of silver is 0.24 J/g degree celsius. how many joules of energy are needed to warm 4.37 g of silver from 25 degree celsius to 27.5 degree celsius?
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