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From the data that we gathered from the laboratory using PAR 6755, the head of solution for sodium chloride is negative. But according to the internet, the heat of solution is positive. Why is that?
If an aqueous solution has a hydronium ion concentration ([H3O+]) of 5.10 x 10-9 mol/L, what is the hydroxide ion concentration ([OH-]) in the solution
the most common source of copper rm cu is the mineral chalcopyrite rm cufes2. how many kilograms of chalcopyrite must
question 50ml of a 0.133 m sodium iodine solution is mixed with 42.6ml of a 0.110m solution of lead nitrate. a yellow
Consider the titration of 40.0 mL of 0.050 M of the fully protonated form of tryptophan with 0.10 M KOH. Calculate the pH of the solution at the following points
calculate the final temperature of a mixture of 110.0 g of ice initially at -10.5 degrees celcius and 396.0 g of water
Calculate the number of moles needed to provide 20g of glucose from a 60% glucose solution
Calculate the concentrations of all species present [Na+], [C6H5CO2-], [C6H5CO2H], [H3O+] and [OH-] in 0.040M sodium benzoate
the first-order rate constant for the reaction of methyl chloride ch3cl with water to produce methanol ch3oh and
A water balloon with a volume of 260.0 L has launched at 20 degrees celcius at sea level where the atmospphereic pressure is 1.00 atm.
Write an equation for the equilibrium reaction and a K expression. Solve for the pH of the solution.
Mixed in a constant-pressure calorimeter, the temperature of the mixture rose from 21.15 to 26.00. If the density of the solution is 1.0g/mL and its specific heat is 4.18J/g C, how much heat is evolved by this reaction in kJ
In a battery, water is used as a salt bridge, and the two electrodes are Carbon and Aluminum. Find the standard reduction potential of the battery, and indicate which electrode is the cathode and anode.
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