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What mass in grams of sodium nitrate, NaNo3, is produced if 20.0 g of sodium azide, NaN3, in a dilute aqueous solution are reacted with excess silver nitrate, AgNO3, according to the following chemical equation? NaN3(aq) + AgNO3(aq) = AgN3(s) + NaNO3(aq).
Determine the oxidation number of all the elements in the balanced redox reaction shown below? 5N^O2^- + 6H^+ + 2Mn^O4^- ---> 5N^O3-^ + 2Mn^+2 + 3H^2O^
A reaction has a standard free-energy change of -12.30 kJ mol-1 (-2.940 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
iron is obtained commercially by the reaction of hematite fe2o3 with carbon monoxide. how many grams of iron are
H3PO4 is a tripotic acid with a ka1=7.5x10^-3, ka2=6.2e-8 and ka3=4.8e-13. What is the value of K for H2PO4 PO4^3- + 2H+
The CO2 reacts. yielding a precipitate of BaCO3, but the CO does not react. This method was used to analyze the equilibrium composition of the gas obtained when 1.77 g of CO2 reacted 2.0 g of graphite in a 1.000L container at 1100K. The analysis y..
Calculate the entropy change. What would be the value of S if the heating were carried out irreversibly?
Calculate the molarity of a saturated solution of sodium hydrogen carbonate, NaHCO3 (aq) that contains 69.0 grams in 1.00 liter of solution.
suppose 2.3754g of copper(II) sulfate pentahydrate is heated to drive off the water of crystallization. Calculate what weight of anhydrous salt will remain?
A 100.0 L weather balloon filled with 4.6 moles of helium has a small leak. If the helium leaks at a rate of 10 mmol/hr. what is the volume of the balloon after 57 hrs?
On size-exclusion chromatogram you have three peaks (2.9, 3.5, and 4.8 min). Column dead volume is 12 mL, and flow rate 4 ml/min. Are your separation conditions fit for size-exclusion requirements? Explain why.
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10 -5.
Explain how these products are produced by showing the mecahnism involved. (draw).
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