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The decay of 238U to form 234Th by a decay releases 4.1 x 1011 joules (J) of energy per mole of 238U atoms. Given that the nuclidic masses of 238U = 238.0508 amu and an a particle = 4.0026 amu, calculate the mass of 234Th in units of g/mol.
(a) What is the molecular weight of the drug? (b) What is the boiling point of the solution? (c) What is the osmotic pressure of the solution?
Calculate the total volume of gas (at 120 and 754 ) produced by the complete decomposition of 1.51 of ammonium nitrate.
what is the differences between partial and full method validation? under what circumstances are they being carried out?
What must be the concentration of PO43- to just start precipitation of Ag3PO4 in a 0.10M AgNO3 solution?
Acetylenic fatty acids are found in many tropical plants. Compound C, C18H30O2, is one such compound; it absorbs 3 equivalents of H2 when treated with H2 over a Pd/C catalyst. Ozonolysis of compound C produces the following products:
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 àC. How many joules of energy are necessary to heat the steam from 100.0 àC to 114.0 àC if the specific heat of steam is 2.01 J/g àC?
A solution prepared by mixing 59.5 mL of 0.360 M AgNO3 and 59.5 mL of 0.360 M TlNO3 was titrated with 0.720 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V.
A closed vessel of volume3.0L contains a mixture of neon and fluorine. The total pressure is3.37atm at 0.0°C. When the mixture is heated to 15°C, the entropy of the mixture increases by 0.345 J·K-1
A 27.0-g sample of water at 270. K is mixed with 49.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Calculate pH of the solution after addition of 0.20 mols of KOH. The Ka for HNO2 is 4.3*10^-4
On a Particular summer day, the temperature is 30.0 degrees Celsius and the relative humidity is 80.0% ( which means that the partial pressure of water vapor in the ambient air is 80.0%
A solution is prepared by dissolving 0.11 mol of acetic acid and 0.11 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
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