What is the concentration of the chromate solution
K2CrO4 has an absorbance value 0.670 in a cell of 1.00cm path-length at a wavelength of 370nm. The value of the molar absorbtivity is 7.36x103M-1cm-1 for K2CrO4 at the wavelength. What is the concentration of this chromate solution?
Expected delivery within 24 Hours
An aluminum rod is 18.5 cm long at 20 degrees celcius and has a mass of 350g. If 10,000J of energy is added to the rod by heat, what is the change in length of the rod?
Light with a frequency of 7.34 × 1014 Hz lies in the violet region of the visible spectrum. What is the wavelength of this frequency of light? Answer in units of nm
Taking the last page of the Brainard, Bennis and Farrell case, and assuming that you are about to distribute 1000 points to the eight partners, who will you rank in the top 5 and why? Can you define the strategy of the organization (using) and d
A weight lifter lifts a set of weights a vertical distance of 1.56m. If A constant net force of 379N Is exerted on the weights, what's the net work done on the weights?
The value of the molar absorbtivity is 7.36x103M-1cm-1 for K2CrO4 at the wavelength. What is the concentration of this chromate solution?
Derive an equation for the radius r of the circular path that the electrons follow in terms of the magnetic field B, the electrons' velocity v, charge e, and mass m. You may assume that the electrons move at right angles to the magnetic field.
Discuss how you see the "war on terrorism" as of this date. Do you think the United States should be engaged in such a war? Give reasons for or against this "war" and whether or not we are giving up our own principles to wage this war
What is the angular speed of rotation of the Earth? (2) An old 33 1/3 rpm record player starts from rest and reaches operating speed in 2.00 seconds. Through what angle did it turn in those 2.00 seconds?
A 2200-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 7.00 m before coming into contact with the top of the beam, and it drives the beam 14.0 cm farther into the ground as it comes to rest. Using energy conside
1929965
Questions Asked
3,689
Active Tutors
1444039
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Question: Which of the following is a difference between barchan and parabolic dunes?
Question: Which of the following is true about sand dunes?
What are cross beds? inclined layers in sediment or sedimentary rocks that reveal the direction of wind transport inclined layers in sedimentary rocks
Question: Which of the following accurately describes the Basin and Range region of the western United States?
Question: Why does the crust subside slightly on either side of a melting glacier?
Question: Will plucking occur if a glacier is NOT advancing? No, because glacial ice is still moving inside the glacier even if the glacier's front is not adva
Question: In the first model, what happens as the layer of coarse material develops at the surface?