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Predict whether each of the following molecules is polar or nonpolar: (a) CCl4 (b)NH3 (C)SF4 (d) XeF4 (e) CH3Br (f) GaH3
A 0.682 g sample of an unknown weak monoprotic organic acid, HA was dissolved in sufficient water to make 50 milliliters of solution and was titrated with a 0.135 molar NaOH solution.
A 0.5220g sample of an unknown monoprotic acid was titrated with 9.96*10^-2 M NaOH. The equivalence point of the titration occurs at 23.84mL.
David J hooper weighs out 13.1 grams of salicylic acid in a 250 mL flask and adds 7.5 mL of acetic anhyride (density=1.080 g/mL) Determine the max (theoretical number of grams) of acetlysalicylic acid he can prepare
Suppose a mercury thermometer contains 3.450 of mercury and has a capillary that is 0.180 in diameter. How far does the mercury rise in the capillary when the temperature changes from 0.0C to 25.0 C? The density of mercury at these temperatures is..
The molar heat of vaporization of ethanol is 39.9 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate ?S for the vaporization of 0.50 mol ethanol.
A mixture of gases contains 2.89 g of N2, 5.38 g of H2, and 9.00 g of NH3. If the total pressure of the mixture is 2.24 atm, what is the partial pressure of each component?
A solution of 0.264 M NaOH is used to neutralized 54.0 mL H3PO4 solutions. if 1.0 mL of NaOH is required to reach end point what is the molarity of H3PO4
Given Ksp {Fe(OH)2}= 1.6x10-14 and Kb(NH3)=1.8X10-5. What concentration of ammonia is necessary to start to precipitate ferrous hydroxide {Fe(OH)2} from a solution of 0.0030M FeCl2
Ethanol is a possible fuel. Use average bond energies to calculate delta Hrxn for the combustion of ethanol.
how many grams of aspirin are available for immediate absorption by the stomach? Assume immediate dissolution of aspirin and it does not significantly change the pH of the stomach contents. The pKa of aspirin is 3.50 and its molecular weight is 18..
What is the hybridization of each carbon for the following structure? Please explain each one and provide the line structure. Supposedly there should be two hybridized sp2 and two hybridized Sp3
Calculate the average absorbance and use this value for an absorbance point on your graph. Use the printed graph from above, find the average Absorbance of the unknown on the y-axis
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