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Problem- A 0.348 M solution of the base aniline, C6H5NH2, has a pH of 9.08. Show how to calculate the Kb for aniline.
Please show your work including the dissociation equation.
A 50.0-g sample of metal at 100.0 degrees C is added to 39.0 g water that is initially 23.50 degrees C. the final temperature of both the water and the metal is 28.46 degrees C.
When the atmospheric pressure is 1050 , what is the absolute pressure (in ) in the tank if the height of the mercury in the open tube is 25.0 higher than the mercury in the tube connected to the tank
Explain what is the number of radioactive K-40 nuclei if Nt =6.27 x 10 to the negative 4 x 1 mole k-40/Molar mass x 6.022 x 10 to the 23/ 1 mole
Find the pH and fraction of dissociation of a 0.100 M solution of the weak acid HA with Ka= 1.00 x 10-5.
question 25 grams of white vinegar is titrated with a standard solution of .5m koh. 39 ml of koh is required to
3-nitrophthalic acid will be first converted into 3 nitrophthalhydrazide by reacting with 25% hydrazine. Reduction of the nitro group to an amino group with sodium hydrosulfite affords luminol.
Ethylene diamine (bp 116 C) and water form a maximum boiling azeotrope (bp 120 C); the azeotropic mixture is 80% in ethylene diamine. Sketch a distillation curve(volume on the x-axis and temperature on the y-axis)
A battery is constructed based on the oxidation of magnesium and the reduction of . The initial concentrations of and are 1.1×10-4 M and 1.6 M , respectively, in 1.0-liter half-cells
Determine whether the molecules: ozone, sulfur trioxide and nitromethane (CH3NO2) contain polar bonds. In those molecules that contain polar bonds, determine whether the molecule is polar
questioncompare the properties of elements and compounds. give two examples of each including one example that exists
find the empirical formula for the following compounds given the following information.find the empirical formula for
Calculate w (in kJ) when 566 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 332 K: 2Fe2O3(s) + 3C(s) ? 4Fe(s) + 3CO2(g)
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