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In farther chem studies, you will learn more information about thermodynamics and how bond breaking (breaking attractive forces) is endothermic, while making a bond (generating attractive forces) is exothermic. The difference between these forces is why some solids dissolve by an exothermic reaction (release heat), while other solids absorb heat and cool the solution. For an ionic solid dissolving in water, briefly identify the attractive forces being broken (endothermic) and the attractive forces being made (exothermic). Based on your results for your ionic solid dissolving, which forces are stronger and briefly explain how this leads to either an exothermic or an endothermic reaction.
One mole of acetyl chloride was mixed with one mole of dimethylamine. After the reaction is complete, what species can be found in the mixture? Draw only the organic structures
Calculate the pH of a solution made by adding 69 g of sodium acetate, NaCH3COO, to 37 g of acetic acid, CH3COOH, and dissolving in water to make 200. mL of solution.
A zero-order reaction has a constant rate of 1.00×10-4 . If after 80.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration.
1 liter of sodium carbonate 0.4 M is added to 1 liter HCl 0.3 M what is the excess material and how many moles remains?
How many grams of oxygen are collected in a reaction where 265mL of oxygen gas is collected over water at a temperature of 25 degrees celcius and a total pressure of 696 torr
a hydrate of calcuim chloride contains 49.3% water and has a formula weight of 219g/mol calculate the molecular formula of the hydrate
a natural hormone of moths has a molecular formula of C21H40(its a zero not an o) and yields the following three compounds on ozonolysis; (1) dodecanol
In the first 12.0 s of the reaction, 1.8×10-2 moles of O2 is produced in a reaction vessel with a volume of 0.260 L. What is the average rate of the reaction over this time interval?
An unknown element forms a yellow ion, XO . It forms a precipitate with silver ions. If 48.0 mL of a 0.250 mol/L solution of silver ions is added to a solution of the unknown ion, 1.856g of a red-brown precipitate are formed. Determine the iden..
Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr
How many grams of are CaH2 needed to generate 147L of H2 gas if the pressure of H2 is 827 torr at 20 C?
an adult person radiates heat to the surroundings at about the same as a 100-watt electric incandescent lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hours?
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