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A. Based on standard reduction potentials, would you expect copper metal to oxidize under standard conditions in the presence of oxygen and hydrogen ions? B.When the Statue of Liberty was refurbished, Teflon spacers were placed between the iron skeleton and the copper metal on the surface of the statue. What role do these spacers play?
What is the mass, in milligrams, of mercury in 1.00 kg lake trout that just meets the Northern American standard of 0.50 ppm Hg?
how many moles of gas are there in a 45.0 l container at 25.0 degress celcius and 500.0 mm hg
when 7.50 g of magnesium reacts with 9.50 g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent?
What molar ratio of sodium acetate to acetic acid (NaAc/HAc) should be used in preparing a buffer having a pH of 4.35? (Ka = 1.8×10-5 for acetic acid.)
Estimate the total calories in a slice of bread that has 9.0 g of carbohydrates, 2.0 g of protein, and 1.0 g of fat. What percentage of total calories is from fat?
Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 41.5 g of chloroform, CHCl3, to give a 0.0940 m solution.
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
Determine the extent of reaction and amounts of B & Z and A reaction having time independent stoichiometry follows the equation
What is the composition in mole fractions of a solution of benzene and toluene that has a vapor pressure of 35 torr at 20 °C? Assume the mixture forms an ideal solution.
Patiens suffering from repiratory disorders are often treared in oxygen tents in which the atmosphere is enriched in oxygen. What is the partial pressure of O2 in an oxygen tent consisting of 45% O2 for an atmospheric pressure of 753 mmHg?
Example of reducing agent mechanism, Using Curved arrows to symbolize the flow of electrons, write the mechanism for the steps involved in the conversion of 9-fluorenone
At 760 K, 15% of a sample of cyclopropane changes to propene in 6.8 min. What is the half-life of cyclopropane at 760 K?
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