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A singly ionized oxygen atom moves at 9300 m/s in a circular path perpendicular to a 0.80 T magnetic field. Find the radius and period of its circular motion. 1. Find the radius of its circular moti
Which spectroscopy technique is more useful, IR spectroscopy or UV-vis spectroscopy. What does does each one tells us?
200.0 L of a 0.200 M copper (II) chloride solution is reacted with 10.0 L of 3.00 M phosphoric acid and 2.850 kg of solid copper phosphate is produced.
Did something go wrong in the experiment? If the extracted unknown is impure, why does it's melting point have a narrow range?
Specify a diameter and a length that the wire can have. What volume of Nicrome is required to make this wire?
A 0.0500 kg cube of ice at an initial temperature of -15.0oC is placed in 0.600 kg of water at T= 45.0oC in an insulated container of negligible mass. A). Calculate the final temperature of the water
The rate constant, k for a given reaction was determine at a number of temperatures. aa graph of log k versus the reciprocal of the kelvin temperature yielded a straight line with a slope of -250k.
Assume the helium behaves like an ideal gas and the balloon's ascent is too rapid to permit much heat exchange with the surrounding air. a. Calculate the volume of the gas at the higher altitude.
A can of coke contains 39.0g of sugar. How much gasoline would contain an equivalent number of calories ? Explain in detail.
How many kilograms of steam will supply the same heat as was supplied by 1.00 kg of hot water in the first system?
An aspiring biochemist needs some help. He is a new technician and is learning about protein separation techniques. He has purchased some ferritin.
Consider a damped harmonic oscillator. After four cycles the amplitude of the oscillator has dropped to 1/e of its initial value. Find the ratio of the frequency of the damped oscillator to its natu
A certain sample of brine has 3.87% NaCl by mass. A 75.0 mL sample weighs 76.9 g. How many litres of this solution should be evaporated to dryness to obtain 725 kg NaCl?
When the x coordinates of the atoms are equal, a magnetic field perpendicular to their motion is turned on so that the atoms collide head-on. What are (a) the magnitude and (b) the direction of the
A 0.521 M potassium hydroxide solution is titrated to the equivalence point by 15.27 mL of a 1.240 M phophoric acid solution.Q. what volume(in mL) of potassium hydroxide was titrated?
0.800 moles of an unknown mono basic weak base are added to1.70 L of water. The resulting solution has a pH of 9.500. What is the Ka of the conjugate acid of the unknown base? Assume no change i
A concave makeup mirror has a radius of curvature of 25cm. How close to the mirror should a young woman's nose be in order to see an image enlarged by three times? Draw a ray diagram to illustrate t
How many grams of NaCN would you need to dissolve in enough water to make exactly 425 mL of solution with apH of 10.00?
Which of the following metals would result in the greatest final temperature if 63.9 grams of each are heated to the same initial temperature and added to 51.1 mL of 29.0°C water?
Suppose a 50 kW radio station, operating at a frequency of 106.5 MHz, emits EM waves uniformly in all directions. a. What is the wavelength of the radio waves?
A sledge loaded with bricks has a total mass of 17.2 kg and is pulled at constant speed by a rope inclined at 19.3° above the horizontal. The sledge moves a distance of 21.0 m on a horizontal su
What is the enthalpy change for the reaction per mole of CsOH? Assume the density of the solutions are 1.00g/mland the specific heat capacities of the solutions are 4.2 J/g. K.
Three polarizers arranged in series are each oriented at 300 from the previous one. If an unpolarized light beam travels through the three polarizers and emerges with an intensity of 0.2 W/m2, what
Explain why the sample in an IR spectrophotometer is place dimmediately after the source of radiation and in UV-Vis is place dafter the monochromator.
Assuming the radius of earth to be 6.38 x 10^6, what is the magnitude of the resulting compressional force on earth?