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An experimental apparatus includes a prism made of sodium chloride (n=1.54). what is the required apex angle of the prism
Find P given that 25 mL of toluene and 25 mL of an aqueous solution containing 0.000330 moles of an organic compound were shaken together and 31 % was extracted into the organic phase.
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 81.7 N, Find the magnitude of the net force the people exert on the donkey
For a patient, a doctor prescribes glasses with a converging lens having a power of 4.0 D What is the location of her eye's near point
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 18.0 cm, Find the electric field just outside the paint layer
Pluto has a mass of 1.30x10^22 kg and a radius of 1.18x10^6 m. What is the acceleration due to gravity on Pluto
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
Balance each of the following equations and choose the appropriate expression for its equilibrium constant. a. NO(g)--> N2O(g)+NO2(g)
Suppose we measure the terminal voltage of a rechargeable NiCad battery and find it to be 1.28 V when measured by a voltmeter. calculate the internal resistance of the battery
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
An airplane pilot fell 355 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.3 m deep, estimate the work done on him by air resistance as h
Consider a rocket-powered hockey puck, and assume the rocket produces a constant acceleration when the rocket is on. Determine the impact location and the impact speed of the puck
A 20.06g sample of mercury (Hg) reacts with chlorine to produce 23.61g of compound. What is the empirical formula of the compound formed. If the molecular mass is approximately 480 amu, what is the
Two boxes, A and B, are connected by a (mass-less) cord and are resting on a smooth (frictionless) table. Find the tension force in the cord connecting the two boxes
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t] The tension in the string is 42 N. Find the linear density of this string
The cis and trans geometric isomers of a compound can have different chemical and physical properties. Draw the structure of the geometric isomer of 2-pentene that has the lower melting point
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.250microC on each plate. The plates are 0.500mm apart. What is the surface charge density on each plate
If a 0.0157 M solution of a certain analyte exhibits 47.5% T at a wavelength of 280 nm, what will the percent transmittance be for a 0.0279 M solution of the same analyte? Assume the pathlengths for
When a battery is connected to a 100.0-? resistor, the current is 4.00 A. When the same battery is connected to a 400.0-? Find the emf supplied by the battery
Aldo Reaction Major and Minor Products from Benzaldehyde and Cyclohexanone. Why is the one you chose the major product
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
You have a 1.23-mol sample of water at ?30.°C, and you heat it until you have gaseous water at 140.°C. Calculate q for the entire process. Use the following data.
A lactic acid/lactate ion buffer solution contains 0.43M HC3H5O3 and 0.62M C3H5O3^-, respectively. The value of lactic acid is 1.4*10^-4. Calculate the pH of this buffer.
Two cars drive on a straight highway. At time , car 1 passes mile marker 0 traveling due east with a speed of 17.0 . At the same time, At what time do the cars pass next to one another
The standard heats of formation at 25 degrees celsius for NO(g) , O3(g) and NO2 (g) are 21.57, 34.1, and 7.93 kcal/mol respectively. What is the value for change direction for