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A gas expands in volume from 27.4 mL at constant temperature Calculate the work done (in joules) if thae gas expands against a constant pressure of 4.1 atm . Enter your answer in scientific notation
Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB. A bag contains a mixture of copper and lead BBs
The colors of the acid and base forms of the indicator bromocresol green are yellow and blue, respectively, and its pKa is 4.6. What color would be expected for the indicator in a solution of pH 6.0 and in a solution of pH 4.8?
Find the pH of a 0.15 M solution of ammonia, NH3. Kb = 1.8*10^-5
Wichita of the following can make a buffer system?
Determine what is the density of the oxygen gas in the full bottle If A cylindrical gas lecture bottle has internal dimensions of 18.0 cm in diameter and a height of 49.0 cm and weighs 1.75 kg when empty.
Calculate (a) the mole fraction of the solute, (b) the number of moles of solute in the solution, and (c) the molecular mass of the solute.
Draw the acylation mechanism including all resonance forms of an electrophile aromatic substitution reaction if the carbon identified with an asterisk(*)
write separate oxidation and reduction half-reaction for the procedure used in the test for nitrate ions.
Calcium carbonate CaCO3 reacts with stomach acid HCL according to the following equation: CaCO3 + HCl --- CaCl2 + H2O + CO2. Tums, antacid, contains CaCO3. If tums is added to 20.0 mL of 4.00M HCl, How many grams of CO2 gas are produced.
An excess of zinc metal reacts with 500. mL of 12M hydrochloric acid and produces 48.8 L of hydrogen gas at 20 degrees C and 750 torr. a)Determine the mass of zinc metal reacted b)Determine the percent yield for the reaction
The constant pressure molar heat capacities of ice and water are 37.7 J/ mol K and 75.3 J/ mol K respectively. The molar enthalpy of fusion of ice is 6.01 kJ/ mol at 0.00° C. The system consists of a 105 gram sample of H2O, initially in the form o..
Calculate the pH of a 0.50 M aqueous solution of NH3. The Kb for NH3 is 1.8 x 10-5.
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