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How many grams of NO(g) can be formed from 5.0 moles of NH3(g) if there is sufficient O2(g) to use all of the ammonia?
determine what is the percent yield of the reaction if 15.0 grams of nitrogen and 2.00 grams hydrogen react to produce
Calculate ?Sºf for oxalic acid and ?Sº for the combustion of one mole of oxalic acid. c) Calculate ?Gºf for oxalic acid and ?Gº for the combustion of one mole of oxalic acid.
Calcium reacts with iodine to form an ionic compound. If a sample of the compound contains 8.5 x 1019 iodide ions, how many calcium ions does it contain?
How much would the beaker and its content weigh if it was completely filled with mercury? The density of mercury is d = 13.5 g/mL ? = g
A student standardizes his NaOH titrant solution with KHP. He performs three titrations - in each trial, the mass of KHP (204.22 g/mol) used is 1.500 g. The average amount of NaOH used in the standardization is 29.3 mL +/- 0.06 mL.
In a first order decomposition in which the rate constant is 0.00830 sec-1, how long will it take (in minutes) until 0.309 mol/L of the compound is left, if there was 0.517 mol/L at the start
What length of time (minutes) would be required to plate 12.25 g of nickel from a NiCl2(aq) solution?
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
A 20 mg sample of a compound is dissolved in 5.0 ml of water and extracted with 2.5 mL of heptane. After separation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition coefficient of the compound, Khep..
If equal volumes of 0.15 NaOH and 0.10 NaH2PO4 are mixed what type of system is formed? A) Buffer Ka2 B) amphiprotic C) Buffer Ka3 D) strong base
The freezing point change is ?1.9°C. a) Calculate the number of moles of solute in the solution. b) Calculate the molar mass of the solute.
Express the concentration of a 0.0280 M aqueous solution of fluoride in mass percentage and in parts per million.
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