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Determine oh- and pH of the following using appendix D a.0.10 M b. 0.080 M c. a mixture that is 0.10 M in NaNO2 and 0.20 M in Ca(NO2)2
A flywheel of 12.0 kg having a diameter of 0.500 m primarily rotating at 4.00 revolutions/seconds raises its rate of rotation at a constant rate and arrives at an angular velocity of 56.5 radians/s
The flask is then cooled to 273 K, at which temperature the pressure in the flask is 508 Torr. Determine the percentage of arsine that has decomposed.
(i) Determine how much of the primary kinetic energy is rotational? (ii) Determine the speed of the center of mass of the sphere at the initial position? If the sphere has moved 0.840 m up the incli
The products of the reaction are CO2 and water. Determine the number of moles of water produced if the reaction goes to completion. Consider the reaction among 50mL of liquid methanol (CH3OH, d
Yellow-green light having wavelength 550nm in air is incident on the surface of a flat piece of crown glass at an angle of 60 degrees. Determine the angle of refraction of the light?
If the mole fraction of argon is 0.37 and the atmospheric pressure is 754torr, determine the partial pressure of nitrogen inside the container? An apparatus is constructed with a rigid container con
An object is positioned at a distance of 25 cm from a thin convex lens all along its axis. The lens consists of a focal length of 10 cm. Determine the values, correspondingly, of the image distance
Ionization involves totally removing an electron from an atom. Explain how much energy is needed to ionize a hydrogen atom in its ground (or lowest energy) state?
An object of length 2.00 cm is within a plastic block having index of refraction 1.50. When the object is observed from directly above, determine the length of the image?
When3.47 g of the sample is dissolved in water and treated with excess silver nitrate solution, a precipitate forms. A divalent metal chloride has 7.7% by weight NaCl as impurity.
A beam of light is incident from the air onto a flat piece of polystyrene at an angle of 43 degrees relative to the normal to the surface.
Where the H2, CO and CH4 come from coalpyrolysis. If a gas phase composed of CO: 13.54%, CO2:15.22%, H2: 15.01%, CH4: 3.20%, and the balance N2 is burned with the 40% excess air.
Determine the distance between alternating bright fringes on the screen when the light source consists of a wavelength of 630 nm?
Assuming they come to the same temperature, determine the final temperature of the water and silver? A piece of silver weighing 25.0g is heated to 100oC. it is then dropped into 42.5g of water that
Combustion of ethanol produces CO2. Combustion of gasoline produces CO2. Explain why is ethanol considered to be a green alternative fuel when it forms the CO2, just as traditional fuels do ( CO2 i
A glass block, for which n = 1.52, consists of a blemish situated 4.5 cm from one surface. At what distance from that surface does the image of the blemish come into view to the outside observer
Explain how much heat must be removed to lower the temperature of 355g of water from 53 degrees Celsius to 18 degrees Celsius.
Determine the numbers of moles of substrate are hydrolyzed per second per milligram of enzyme when the substrate concentration is much greater than KM?
The two parallel currents 16A and 24A is 1.75m apart. Determine the force on the electrons moving with speed 2.5 * 10^4 M/s. Determine magnetic field first. Determine location where the magnetic fie
Replacement pool for newly vacant positions consists of 12 qualified individuals. In how many different ways 4 replacements can be selected from this pool?
Explain why does the removal of one electron in O2 strength hen bonding but the removal of an electron in the N2 weaken bonding?
Why multiple extractions with smaller volumes of the extraction solvent are typically 'better' than the single extractions with a larger volume of the extraction solvent.
When the velocity of blood flow in the aorta is generally about 0.26 m/s, what beat frequency would you anticipate when 5.15 MHz ultrasound waves were directed all along the flow and reflected from
Suggest scheme for the total separation of the three compounds in a mixture of benzoic acid, phenol, and naphthalene using this information.