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Write an equation for the formation of the salt that could be formed by reaction of one molecule of adipic acid with two molecules of ethylamine
A student wants to prepare exactly 1000 mL of a 0.500 M aqueous potassium hydroxide solution. What mass of potassium hydroxide should the student dissolve in the solution?
Calculate the molar mass of the uknown compound. The boiling point elevation constant for water is0.52°C/m
Compute the concentrations of all species in a 0.900 M sodium sulfite solution. If it is given that the ionization constants for H2SO3 are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
Calculate the pH of the solution, taking into account the activity coefficients for H+ (yH+ = 0.933) and IO3- (yIO3- = 0.928). Assume yHIO3 = 1. (Hint: quadratic)
using the hendersoon hasselbach equation calculate the pH of a solution made by adding 50.0mL of 1.00M sodium acetate to 50.0mL
A sample of lead releases 221 kJ of heat when freezing. What is the mass of the sample? DHfus = 23 J/g
An antacid tablet contraining calcium carbonate as an active ingredient required 9.53 mL or 0.0956 M H2S04 for comlete neutralization.
How much gold metal (in grams) can be electro-plated from a gold (III) solution with 1.50 V and 2200 mAh. I think it is 16.17 grams
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
What is the pE value in an acid mine water sample having [Fe3+] = 6.79E-3 M and [Fe2+] = 4.14E-4 M?
A 4.40 g nugget of pure gold absorbed 289 J of heat. The initial temperature was 21.0°C. What was the final temperature?
Consider the following reaction: NH4HS(s) NH3(g) + H2S(g) An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]=.278M and [H2S]=.355M.
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