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The combination reaction of sodium metal and chlorine has to form sodium chloride is represented by the following balanced equation:
2Na(s) + Cl2(g) ? 2NaCl(s)
If 5.00 g of sodium metal reacts completely with excess chlorine gas, and 11.5 g NaCl is actually obtained, what is the percent yield of sodium chloride?
Phosphorous-32 has a half life of 14.26 days. If a patient is initially given a dose ?of 1.55 g of Phosphorous-32, how much remains in the patient's body after 1 week. Assume none of the dose is excreted from the body
Although the aluminum cylinder is a solid (and, therefore, is quite in-compressible), it actually contains quite a bit of empty space.
The average brewed cup of coffee contains 453 mg/L caffeine. What volume (in ml) of coffee should be diluted to 25ml prior to analysis using only standard transfer pipets with integer values from 1-10ml
What is the final pH when 100 ml of 0.1 M HCl is added to 150 ml of 0.2 M dihydrogen phosphate
The student next added 3M KOH solution to the aqueous solution and Mg(OH)2 precipitated. After filtering the solution and drying the precipitate, the student recovered 1.10g of Mg(OH)2. Calculate the percent Mg(OH)2 in the mixture
Assume that sucrose is a molecular solid and does not ionize when it dissolves in water. Kf values are given here.
Show the electron configuration of phosphorus, P . Be sure to arrange the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
liquid stream containing ethane and propane enters a flash chamber operated at 80 oF and 300 psia. Leaving the chamber, the vapour stream flow rate leaving the chamber
If a mixture of gases contained 78% nitrogen at a pressure of 984 torr and 22% carbon dioxide at 345 torr, what is the total pressure of the system
determine the equilibrium concentrations of all three compounds if the starting concentrations of both reactants are .00408 M, wiht [HOCl]=0.000 M.
If a solution has a pH = 7.0 and Cd2+ is added to it (the ksp of Cd(OH)2 = 2.5 x 10-14) what molar concentration of cadmium ion is needed for precipitation to occur
The net ionic equation for the reaction, if any, which occurs when aqueous solutions of manganese(II) chloride and sodium carbonate are mixed is
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