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Copper has an electrical resistivity %u03C1 = 1.72 x 10-8 %u03A9m. What is the electrical resistance of a copper wire with a radius of 1.0 mm and a length of 25 m
Predict the products of the following reactions: W(CO)5[C(C5H52)(OC2H5)] +BF3 ? (C5Me5)Rh(CO)2? Will I know that the final answer has to be: W(CO)5[C(C5H5)(OC2H5)] +BF3 ? [(CO)5W?CC6H5]+ +F-+F2BOC2H
Give the formulas of all new molecules or ions formed when solutions of the following are mixed. If there is no reaction write "N.R." (a) Cl-, Br- , I-, Fe3+ (b) Fe2+, Br2 water
A 54.0 kg ice skater is gliding along the ice, heading due north at 4.10 m/s. What is the minimum value of Ug that allows her to continue moving straight north
The best combination of reactants for preparing (CH3)2CHSH is a. (CH3)2CHBr + NaSH b. (CH3)2CHOH+CH3SH c. (CH3)2CHONa +CH2SH d. CH3CH2CH3 + NaSH
Why must we the wavelength bet set to 447nm when the FeSCN2+ solution is an orange-brown colour
A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. Find the magnitude and direction of his average acceleration
The reaction below shows the acid catalyzed Sn2 reaction between 1-butanol and sodium acetylide. Will this reaction proceed as depicted. Explain.
For pyridine at 13.08 K, Cp=4.448 J/(mol*K). Assuming that the Debye formula for the heat capacities of crystals at low temperatures applies to pyridine at temperatures below 13.08 K, calculate the
A 85 cm^3 block of iron is removed from an 800 degree Celsius furnace and immediately dropped into 200 ml of 20 degree celsius water
How to find the pH of a solution that is 4.2 x 10^-2 M in HClO4, and 4.9 x 10^-2 M in HCl? and.... a solution that is 1.03% HCl by mass
A laser used to weld detached retinas emits light with a wavelength of 652{\rm nm} in pulses that are 20.0{\rm ms} in duration. What is the energy of one photon in electron volts
Calculate the pH of a formic acid solution that contains 1.37% formic acid by mass. (assume the density of 1.01 g/mL for the solution
For the titration of a weak base with a strong acid, the half titration point is reached when: Answer A. pH = pKb. B. pOH = pKb. C. pH = pOH. D. pH = pKa.
Write the net ionic equation (including phrases) that corresponds to Cu(ClO4)2 (aq) + K2CO3(aq) --> CuCO3(s) + 2KCLO4(aq).
mercury(II) acetate is alowed to react completely with a solution containing 9.718 g of sodium sulfide, how many grams of solid precipitate will be formed. How many grams of the reactant in excess
A car race takes place on a long straight track, at the beginning of the race the car accelerates from rest to some top speed with a (constant) acceleration of 1.13 m/s2, What was the top speed reac
Calculate the theoretical yield for the bromination of both stilbenes and cinnamic acid, assuming the presence of excess pyridinium tribromide.
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2 /H3O . Draw the structure of the alkyne (containing only car
A 30 cm-diameter vertical cylinder is sealed at the top by a frictionless 15 kg piston. What will the height of the piston be
Calculate the ionic strength of a solution that is 0.08 M in La(NO3)3 and 0.06 M in Fe(NO3)2.
You want to determine the protein content in milk with the Kjeldahl method. You take 100 g whole milk and use 100 mL of 0.5 M hydrochloric acid to collect ammonia. You needed 34.50 mL of 0.3512 M Na
A certain weak base has a Kb of 8.70 × 10-7. What concentration of this base will produce a pH of 10.10
The objective lens of a telescope is a symmetric glass lens with 100cm radii of curvature. The eyepiece lens is also a symmetric glass lens. What are the radii of curvature of the eyepiece lens
Draw the structure of oxaloacetate and clearly show which carbon atoms are 14C and which are 13C labeled. Draw a box around your answer.