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Assume that there is no heat exchange with the surroundings. A 75-g ice cube at 0.0 degrees Celsius is dropped into the 200-g of water in a 85-g aluminum cup. The cup and the water have an initial t
Discuss why the 3-pentanol 13C-NMR spectrum contains three peaks while the trans and cis-2-pentene spectra contain five peaks (note that 13C-NMR gives a peak for each unique&n
0.95 % other and 0.52% in soluble. Identify three bases of Portland cement and the compounds they form when mixed with water when mixed with water the resulting cement slurry is basic.
Determine the numbers of different principal quantum numbers can be found in the ground state electron configuration of nickel?
Explain how much heat is absorbed by a 11.2 g sample of water in going from liquid at the 38.9 oC to steam at 116 o C and a pressure of 1.00 atm? Use the data in the table for proble
The two beakers are connected with a salt bridge. A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immerse
Illustrate stereo presentations for both (R)-2-Octanol and (S)-2-bromooctane. Explain what this indicates about the mechanism of attack by the nucleophile in this reaction
Is energy conservation violated when the refracted ray vanishes for theta 1 > theta c, where does the light go? Discuss why the angle among the incident and reflected rays is twice the angle
Determine the numbers of times more acidic is the grapefruit juice than the beer? The difference between each pH unit is a factor of 10. If the pH of a grapefruit is 3 and the pH of beer is 5.
Calculate the equilibrium temperature and state (solid, liquid, or gas) of the sample when a 100.0g sample of ice, H2O(s) at -4.0C absorbs 1.20 kilocalories of heat (energy).
The Cytochromes associated with the electron transport system (oxidation part of oxidative phosphorylation) all contain iron in either the 2+ or 3+ oxidation state, and can switch from one to the ot
Determine the value of log K' for the oxidation of cerium metal forming the Ce (III) by dichromate in aqueous acid solution. Express your answer to two decimal places.
Determine the phenol concentration of the wastewater in ppm. Provide your answer to two decimal places if a 280.00-mL sample of waste water took 47 min 37 sec for complete bromination of the phenol,
When 25.9g of Nickel II Chloride and 10g of sodium hydroxide react according to the equation below, 10.9g of Ni (OH)2 was formed.
Name the product and explain briefly why this type of reaction is very useful in organic chemistry. Write and equation for the reaction of 1-bromopropane with a solution of potassium cyanide i
A high molecular weight aliphatic hydrocarbon showed only the (M+2)+ and (M+3)+ peaks. Indicate only from the above given information the range of carbon atoms in the compound.
When alkenes are reacted with ozone and the product hydrolyzed with dilute acid and zinc, the organic products are butanone and propanone. Determine the name and formula of the alkenes?
What observation would indicate that H2 is being generated either during your reaction or when you pour the reaction mixture into water? Sodium borohydride reacts slowly with water to generate the
Determine the concentration of fluoride anion in the saturated solution if the concentration of the calcium ion in a saturated solution of calcium fluoride is 3.335*10 to the negative4th M.
Explain how much heat is released in the conversion of 1.00 L of steam at the 21.9atm and 200 degrees Celsius to ice at -6.00 degrees Celsius and1 atm.
Explain what volume of H2S was collected at 32 degrees C when the atmospheric pressure was 749 torr? CuS (4.22 g) was mixed with excess HCl and the resulting H2Swas collected over water. The vapor
Calculate how many moles of HCl can be produced if 2.5 moles of hydrogen react with chlorine by the following reaction: H2 + Cl2---> 2HCl
Determine the freezing point for a 3.13 m aqueous solution of NaCl. Determine the increase in the boiling point, ΔT, for a1.39 m solution of sucrose (dissolves as a molecule) in the water.
Determine the vapor pressure of water for this solution? Sugar is dissolved in the hot water at 45oC until the mole fraction of water decreases to 0.862.
If the absorbance of this compound were measured over a wide range of wavelengths of light, it would absorb not a single wavelength, but colors of varying energies centering on the wavelength of ma