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In step 1 of the experimental procedure, copper metal is added to concentrated nitric acid. The reaction between copper metal and concentrated nitric acid is an oxidation-reduction reaction that is somewhat complicated.
4 HNO3(aq) + Cu(s) => Cu(NO3)2(aq) + 2 H2O(l) + 2 NO2(g)
Identify the element or elements that undergo REDUCTION.
An ideal gas is contained in a cylinder with a volume of 5.0 102 mL at a temperature of 30°C and a pressure of 720. torr. The gas is then compressed to a volume of 25 mL, and the temperature is raised to 794.°C. What is the new pressure of the gas..
an auto bumper is coated with a layer of chromium 0.017 cm thick. the bumper has a surface area of 3.43 x 104 cm2. the
Why are we being so careful to eliminate moisture from the reaction vessel, solvent, etc? What is the reaction that will occur if water is present?
A student needs 65g of butonic acid for a reaction. The student has 450g of a 43% in ethanol.
A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form? What is the identity of the precipitate?
Although the planet Venus is similar in size and composition to the Earth, the atmosphere is not conductive to life. The average temperature is about 740 K
what is the solubility of N2 in a diver's blood?[Use the value of the Henry's law constant k calculated in Part A, 6.26 * 10^-4]" Assume that the composition of the air in the tank is the same as on and and that all of the dissolved nitrogen remai..
Hexane has a normal boiling point of 68.7 degrees C. what is the mole fraction of a nonvolatile solute in a hexane solution which has a vapor pressure of 600 torr at 68.7 degress C
Calculate how many kilograms of H2 it takes to electrify an average home for a month. Assume there are 30 days in a month. (1 Whr of electricity = 3600 J) Standard Values
What nuclide is produced in the decay process? Write the balanced radiochemical equations for both (proton absorbtion and alpha decay) processes.
A common by-product in this reaction is biphenyl, which is generated through a coupling reaction of phenylmagnesium bromide with unreacted bromobenzene. Draw the structure of biphenyl. Which part of your workup removed this by-product
The formation of a white solid id often observed after alpha-phenylethylamine comes into contact with carbon dioxide in the atmosphere. What is that white compound? Give an equation that shows its formation.
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