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Sound with a frequency of 431 Hz travels through steel. A wavelength of 11.27 m is measured. determine the speed of the sound in steel
A wire 6.70m long with diameter of 2.10mm has a resistance of 0.0250 ohm. Find the resistivity of the material of the wire
Calculate the amount of heat transferred when 28.0 grams of CH3OH(g) is decomposed by this reaction at constant pressure.
Consider an RC circuit with E = 12.0, R= 195 ohms, and C = 55.8 micro farrads. Find the initial current in the circuit
A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 25 m. calculate the average force [exerted by the bat on the ball] during contact
How many moles and liters of gas would be produced by reacting 55.7 g of NaHCO3 with excess vinegar. Assume the reaction releases all the gas theoretically possible, and the reaction takes place at
The first equivalence point was at 7.59mL and the second equivalence point was at 14.91 mL. My calculated pKa1 is 2.01 and pKa2 is 5.71. What is the molarity of the maleic acid
An amusement ride consists of a car moving in a vertical circle on the end of a rigid boom. The radius of the circle is 32 meters. What is the force of the boom on the car
If 10.2 g of ammonium carbamate is introduced into a 0.500 L container, what is the total pressure inside the container at equilibrium
A capacitor consists of two parallel plates, each with an area of 14.0 cm^2, separated by a distance of 0.150 cm. How much energy is stored in the charged capacitor
Determine the braking force required to slow the train of cars by this ammount by using the following method; the laws of motion and d'alemberts principle.
Calculate the temperature at which H2 may be obtained by spontaneous composition of water. Comment on feasibility of producing H2 by this means
The only two forces acting on a body have magnitudes of 20N and 38N and a directions that differ by 76 degrees. What is the mass of the body
A thin, horizontal copper rod is 1.10 m long and has a mass of 203 g. What is the minimum current in the rod
Enough of a monoprotic acid is dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 6.34. Calculate the Ka for the acid.
Three positive particles of equal charge +11 uC, are located at the corners of an equilateral triangle of side 15.0 cm. calculate direction of the net force on each particle
At a given temperature, 2.74 atm of F2 and 2.08 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrF is found to be 1.003 atm. Calculate Kp for the reaction at th
What a facility manager must do to satisfy applicable federal reporting requirements when a spill or release has occurred in reportable quantities?
A 4.68 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. What is the mass of the second sphere
Provide a structure for the following compound: molecular mass 101; IR: 3397, 3200, 1655, 1622 cm-1; 13C NMR: ? 27.5, ? 38.0 (weak)
Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1; 1H NMR: ? 5.85 (1H, d, J = 17
A 9770 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 28 mph, 19 degrees East of North. What is the force of the wind (Fwind) on the boat
NH3 is a weak base (Kb=1.8 x 10^-5) and so the salt NH4Cl acts as a weak acid. What is the PH of a solution that is 0.049 M in NH4Cl?
lf the catalyzed decomposition of NrO occurs first at a Tr:341 K and then atTr = 229 K, with a k/k, ratio of 0.500, what is the activation energy