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A student following the procedure described in this module collected the foll wing data: Mass Mg, m= 0.0243, initial syringe volume, ml=1.0, final syringe volume,ml= 26.5, barometric pressure, torr= 754, temperature,k= 298. Calculate the gas law constant. R=pv/nt Find the R value
What would be the volume gas produced by the reaction of .243g of magnesium metal and collected at 750 torr and 298k? Use the value R in the previous problem.
when nacl is added to a solution of agno3 a white precipitate of agcl forms. if concentrated ammonia nh3 is added to
what is the product of the reaction of CsCl and SnCl4 and what is the role of cesium chloride in the reaction
Calculate the pH of the solute in an aqueous solution of 0.372 M (CH3)3N(aq) if the Kb is 6.5 Ã- 10âˆ'5.
sodium hypiodite is disolved in water to make 1.25L of solution. the solution pH is 11.32. What is the Kb value of the hypoiodite ion?
Using the Bohr equation for the energy of any level in a hydrogen atom, calculate the energy of each level, n=1 through n=8 and n=(infinity), f. Calculate change in Energy
Adipic acid and citric acid have very similar melting points. Given two unkown samples, one being citric and the other adipic acid
A trainee in a medical laboratory will be released to work on her own when her results agree with those of an experienced lab technician at the 95% confidence level. Following are the results from a blood urea level:
Find deltaH for the combustion of ethanol (C2H6O) to carbon dioxide and liquid water from the following data. The heat capacity of the bomb calorimeter
How many mmoles of HCl reacted with the Na2CO3? c. Calculate the molarity of the HCl solution.
What is the high-T approximation for rotations and vibrations? For which of these two degrees of freedom do you expect this approximation to be genrally valid at room temperature?
What is the half life of this reaction if the initial concentration is 1.40 M. b) Given this same starting concentration, calculate the concentration after 3 minutes. c) How long would it take for the starting concentration to reduce to 0.50 M?
Calculate the heat released when 2.58 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
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