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A mixture consisting of 0.250 M N2 and 0.500 MH2 in a reaction vessel at certain temperature reactsand reaches equilibrium: N2(g) + 3H2 (g)<--> 2NH3(g). At equilibrium, the concen
He was supposed to travel due north for 4.8 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 45° north of due east. (a) How far must he now travel to reach base cam
A mixture containing only Al2O3 (FW101.96) and Fe2O3 (159.69) weighs 2.019 g.When heated under a stream of hydrogen, theAl2O3 is unchanged butFe2O3 is converted to metallic Fe plusH20(g).
A beaker of mass 1.3 kg containing 2.7 kg of water rests on a scale. A 3.9 kg block of a metallic alloy of density 5300 kg/m3 is suspended from a spring scale and is submerged in the water of density
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.02 m/s. The car is a distance d away. The bear is 32.8 m behind the tourist and running at 5.11 m
The average energy output of a barrel of oil is 5.90 ×106 kJ/barrel.Calculate the number of barrels of oil needed to produce the sameenergy as the nuclear fission reaction of 1.30 mole of
The coefficient of kinetic friction between the pavement and the car's tires is 0.500. How large is the available frictional force?
A saturated solution of barium chloride at 30C contains 150 g water. How much additional barium chloride can be dissolved by heating this solution to 60C?
There are 3 point charges: q1=+4.0*10^-6 C, q2=+2.0*10^-6 C, q3=-3.0*10^-6 C. a.) Find the electric potential at Points A and B. b.) Find the electric potential energy of a -5.0nC charge placed at poi
An electron is accelerated by a constant electric field of magnitude 300N/C. a. Find the acceleration of the electron.
A proton is placed 4.65 mm from an infinitely long line of charge. The proton is observed to experience an acceleration of 3.34 x 107 m/s2, toward the line of charge, at the moment it is released. Ca
The electric dipole moment from is then placed into a uniform electric field that is 5.83 x 105 N/C in the negative y-direction. If released from rest, how much kinetic energy (rotational) the dipol
A sealed metal container contains a gas at 20 degrees Celsius and 1 atm. To what temperature must the gas be heated to the pressure to double to 2.00 atm? (Ignore the expansion of the container)
A clarinet behaves like a tube closed at one end. If its length is 3 m, what is its fundamental frequency? The velocity of sound is 344 m/s. Answer in units of Hz.
When 24.0 g of glucose (a nonelectrolyte) are dissolved in 500. gof water, the solution has a freezing point of -0.47°C.What is the molar mass of glucose? Kf of water is1.86°C/m.
Write the Lewis structures for the ozone molecule (O3). Show allresonance structures. Draw the Lewis structure for the bicarbonate ion (HCO3-). Show allresonance structure.
What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 290 m?
If 3.9 V are applied across the capacitor plates and the electrons enter through the hole in the negatively charged plate with a speed of 2.90* 10^6 m/s, what is the speed of the electrons as they e
127.7g of NaCll completely dissolves (producing Na+ and Cl- ions) in 1.00kg of water at 2.0 degree celcius. the vapor pressure of pure water at this emperature is 23.8 torr. Determine the vapor pre
A 3 micro coulomb charge is uniformly distributed on a ring of radius 11 cm. The value of the Coulomb constant is 8.99 × 109 N · m2/C2. Find the electric field on the axis at 0.9 cm from
The radius of a xenon atom is 1.3x10-8 cm. A 100-mlflask is filled with Xe at a pressure of 1.1 atm and a temperatureof 265 K. Calculate the fraction of the volume that is occupied by Xe atoms. (Hin
If a drop is to be deflected a distance d = 0.260 mm by the time it reaches the end of the deflection plate, what magnitude of charge q must be given to the drop? Assume that the density of the ink
What are some differences between a titration curve of a strong acid with strong base & a titration curve of a weak acid with strong base. Assume that the initial number of moles & initial
Boron consists of two isotopes... B w/ mass number 10 andatomic number 5 that has a mass of 10.0 amu....... and B w/ massnumber 11 and atomic number 5 that has a mass of 11.0 amu. If the atomic weig
A parallel plate capacitor is composed of two square plates, 38.0 cm on a side, separated by an air gap of 0.80 mm. (a) What is the charge on this capacitor when there is a potential difference of 158