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A solution of sodium thiosulfate was standardized by dissolving0.1249 g KIO3 (214.00 g/mol) in water, adding a largeexcess of KI, and acidifying with HCl. The liberated iodine required 20.51 mL of t
1.620g of naphthalene is completely burned in bomb calorimeter and a temperature increase of 8.48 C is noted. If the heat ofcombustion of naphthalene is -5156 kJ/mol.
Explain why the main reaction between acetophenone and p-anisaldehyde is the mixed aldol reaction rather thanself-condensation of acetophenone or the Cannizzaro reaction of p-anisaldehyde.
On this line (the equlibrium of graphite and diamond) there isa point "A" that is located on the far right side of the line(3/4 of the way if you move to the right on the line). They ask todetermine
A battery consists of two or more electrochemical cells connectedtogether. For example, a 12-V car battery has several 2-V cellsconnected in parallel (+ terminal to + terminal and - terminal to -te
A man with a mass of 60 kg steps into powdery snow and sinks to his waist. The area of each man's feet is 250 centimeters squared. He put on skis, each of which has an area of 1800 centimeters squ
How would the quivalent weight be affected by the following circumstances (i.e. would it be higher than the true value, lowerthan the true value or remain unchanged)? Give reasons for your answers.
What are the values of the entropy changes (system, surroundings, and universe) for the cooling of 1 mol of O2 (g) from 298 K to O2 (l) at 90.19 K if the process is done a. Reversibly b. Irreversibl
For a convalent compounds, how is the structure(bonding) of a compound which is molecular different from one which has a covalent network?(consider in your answer whether or not a molecular compound
Chlorine reacts with pentane to form a variety of products. Draw the mechanism for the formation of 2-chloropentane. Indicate the stereochemistry of theintermediates and the stereochemistry of the
16 fl. oz of a certain sample of juice contains the recommended daily allowance (60 mg). Given that 1 qt. = 0.95 L and that there are 32 fl oz.
A gas mixture contains one-third methane by volume and the balance oxygen at 350 deg C and 3 bar. Calculate the specific enthalpy of this stream in kj/kg relative to the pure components at 25 deg C
A 1.6192-g sample of neat hydrazine iscarefully dissolved in water and diluted to 1500.0 mL. A 20.00-mLaliquot of this solution is withdrawn and titrated with 27.74 mL of the standard iodine solutio
Use the balanced redox reactions and the standard cell potential to predict the volume of hydrogen gas (at STP) required each month to generate the electricity needed for a typical house.
Calculate the number of mole of HC2H302 and NH3 that are initially present and the number of moles that are actually neutralized.
The π to π* transition in beta-carotene occurs at585nm. This transition in beta-carotene is well modeledas the lowest energy transition in a particle in a box model.
Whaween the is the relationship between the dipolemoment and the bond moment? How is it possible for a molecule tohave a bond moments and yet be non polar?
Chloramphenicol is a potent antibiotic, isolated from sterptomycesvenezuelae, that is particularly effective against typhoid fever.Both chirality centers in chloramphenicol are known to have Rconfi
How is the equivalent weight of a cation found? Is it the molecularweight divided by the number of equivalents? And how do youdetermine how many equivalents are in a cation or anion?
Calculate the specific heat of a metal. in J/kg.K, from the following data. A container made of the metal has a mass of 3.6 kg and contains 14.5 kg of water, a 1.8 kg of the metal initially at tempe
An electron is released from rest at a perpendicular distance of 8.2 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 6.0 µC per meter. Wha
An isolated conductor of arbitrary shape has a net charge of +9.0 x 10-6 C. Inside the conductor is a cavity within which is a point charge q = +2.5 x 10-6 C. (a) What is the charge on the cavity wall
You have at your lab the following equipment: water purification units; laboratory glassware of all sorts; digitalbalances accurate to the milligram and microgram scale; and, acomputer with high spe
The electric field just above the surface of the charged drum of a photocopying machine has a magnitude E of 2.3 × 105 N/C. What is the surface charge density on the drum, assuming that the drum
Calculate thespeed that a gas phase oxygen molecule would have if it had the same energy of an infrared photon (λ = 5000 nm), avisible photon (λ = 500nm), an ultraviolet photon(&lambda