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A person is pushing a wheelbarrow along a ramp that makes an angle α = 41.0° with the horizontal. The wheelbarrow and load have a combined mass of 28.75 kg with the center of mass at the midpoint of the length L. What is the total force the person must apply so that the wheelbarrow remains horizontal on that ramp?
Consider this reaction involving an unknown element X. When 1.800 g of XBr reacts, 0.6758 g of Br2 is produced.
What steps would you take to separate the following four organic compounds using an acid/base solvent extraction? Compounds: m-anisic acid, p-toluidine, thymol, indane
A line in the Balmer series of hydrogen has a wavelength of 434 nm. From what state did the electron originate? Ni=? In what region of the electromagnetic spectrum is this line observed?
A solution of a dye absorbs light of wavelength 480 nm, and for this absorption, the extinction coefficient is 18600 L/mol/cm. A sample of the dye of unknown concentration is placed in an optical cell of path length 1 cm
If a 2.30 milligram sample of this cytochrome protein contains 10.3 micrograms of iron, what is the molar mass of this new protein?
Vinegar is 5% acetic acid and its molarity is 0.833M. Is the concentration of the hydronium ion in vinegar greater than, less than, or equal to 0.833 M--why or why not. Explain why it is incorrect to directly calculate the pH of vinegar from the m..
which of the following substances with specific heat capacity provided would show the greatest temperature change upon
What is a possible molecular formula of the hydrocarbon?
illustrate the decomposition of arenediazonium salts using a reaction mechanism and briefly explain why the decomposition produced formed is so reactive.
Suppose you were asked to carry out an aldol condensation reaction between benzaldehyde and 5-methylhexanal,
If the trend in second ionization energy for the elements from lithium to flourine isn't a smooth one. Forecast which of these electrons has the highest second ionization energy as well as which has the lowest and explain.
To what volume should you dilute 95mL of a 12.0M H2SO4 solution to obtain 1.80M H2SO4 solution
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