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Imagine that you are a geologist trying to determine the amount of iron in the samples of rocks in a mountain side. A typical reaction used to determine the amount of iron in a sample is to combine it in a reaction with permanganate ion, MnO4-, with Fe2+ in an acidic solution. The skeleton reaction is: MnO4-(aq) + Fe2+(aq) --> Mn2+(aq) + Fe3+(aq)• Write the half reactions for this reaction.• Write the balanced equation for this reaction.
How many grams of lead will be deposited at the cathode from a solution of Pb2+ ions by a 0.15 ampere current flowing for 1.00 hour.
Problem- Consider the complete combustion of 10.00 g of liquid heptane (C8H18) in excess oxygen. a) What volume of carbon dioxide at stp is produced
What is the sum of the stoichiometric coefficients when the reaction is balanced to lowest common denominator
What is the molarity of a permanganate solution if it takes 10.0 mL of 0.200M iron(II) solution to completely react with 15.7 mL of the permanganate solution
Get a glass and fill it with cold tap water. Observe the water in the glass as it warms to room temp. What effect does temp have on the amount of gas that can remain dissolved in water? Can you use this information to explain boiling?
Calculate how much heat is released when 4.5 g of methane is burned in a constant pressure system. (CH4(g) + 2 O2(g> --> CO2(g) + H2O (l) ,delta H = -890 kJ.
Question- You need to produce a buffer solution that has a pH of 5.36. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this ..
Problem- Gentamicin and penicillin are not administered together because they are chemically incompatible. Draw ONE potential chemical reaction that can form inactive products.
When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed
What is the value of q when 0.0209 g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is -40.7 kJ/mol.
Consider these three reactions, and their corresponding values of ?Gº: 1/2 N2 + O2 NO2 ?Gº = 100 kJ 2 NO2 2 NO + O2 ?Gº = 200 kJ NOBr NO + 1/2 Br2 ?Gº = 300 kJ Calculate the value of ?Gº for 1/2 N2 + 1/2 O2 + 1/2 Br2 NOBr.
A 14.824g rock is placed in a graduated cylinder containing 45.8mL of water. Calculate the density of the rock if the water level rises to 55.2mL.
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