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Calculate how much 95% ethyl alcohol will be required to dissolve0.1g of sulfanilamide at 78 degrees celsius and Using the volume calculated in the previous question,calculate how much sulfanilamide will remain dissolved in the mother liquor after the mixture is cooled to 0 degrees celsius.
a mixture of 1.374 g of h2 and 70.31 g of br2 is heated in a 2.00-l flask at 700 k. the following equilibrium is
The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)--->CO2(g) + H2O(g)
Calculate the pH of a solution prepared by mixing 300 mL of 0.25 M sodium hydrogen ascorbate and 150 mL of 0.2 M HCl plus water to a final volume of one liter. The Ka of ascorbic acid is 5 x 10-5.
statements is true concerning the applicability of the E1, E2, SN1, and SN2 mechanisms to reactions
The combustion of 13.2 g of propane, C3H8 (g), liberates 6.6x10^3 kJ of heat. What is the enthalpy change (kJ) for the reaction?
Calculate the amount of heat released in the complete combustion of 8.17 grams of Al to form Al2O3(s) at 25 degrees Celsius and 1 atm. ΔH0f for Al2O3(s) = 1676 kJ/mol.
A 16 ounce specialty coffee drink contains 200 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution? What is the percent ionization
how much heat in kilojoules is needed to convert 856 g of water 100 degrees celcius to steam at 126 degrees celcius?
Draw the structure of the carbocation intermediate leading to the formation of 3-methyl-1-butene. Use the (+) and (-) tools to adjust charges as necessary
what is the calculated value of partial pressure of o2 in acid mine water of ph 2 in which fe2+=fe3+.
a sample of neon gas collected at STP occupies a volume of 18.8 L . How many moles of gas does the sample contain?
a photomicrograph was taken of a specimen at a magnification of 100x and it was determined that the average number of
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