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A local jeweler purchased large amounts of pure silver because he and his staff wanted to design a new line of Silver jewlery a process which requires the melting and molding of silver into a varieyt of designs. How much heat, in joules, is needed for the staff to completely melt 4.54 x 10*3 g of silver, orginially at 25.0 *C
Boiling point of silver = 2212.0 *CMelting Poing of silver = 961.8 *CSpecific Heat Capacity of Solid Silver = 0.0558 cal/g*CHeat of Fusion of Silver = 104.7 J/gHeat of vaporization of silver = 2322.3 J/g
determine what is the percent by mass of sodium phosphate in a 0.142m na3po4aq solution? if it is given that it has a
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
why is significant serum (in the blood stream) chlorestrol reduction so difficult, and why do most of the drugs designed to reduce
Suppose you had standard .1000 M NaOH ,an indicator, such as phenolphthalein, an analytical balance, and a micro-buret available. Explain how you could determine
Fish are processed into Fish meal and used as a supplemen- tary protein food. In the processing the oil is First extracted to produce wet Fish cake containing 80 wt % water and 20 wt % bone-dry cake
In the concentration range of 500 to 2000 ppm of U, there is a linear relationship between absorbance at 351.5 nm and concentration. At lower concentrations the relationship is nonlinear unless about 2000 ppm of an alkali metal salt is introduced ..
The standard free energy change for the hydrolysis of ATP is -30.5 kJ. In a particular cell, the concentrations of ATP, ADP, and Pi are 2.8×10-3 M, 1.1×10-3 M, and 4.7×10-3 M, respectively. Calculate the free energy change for the hydrolysis of und..
find out which of the given is a saturated hydrocarbon a ch2ch-chch2 b ch3-ch2-cch cch3-ch2-ch2-ch3 dch3-chch-ch3 also
if the initial concentration of ab is 0.230 m and the reaction mixture initially contains no products what are the
Given that Kw for water is 2.4× 10-14 at 37 °C, compute the pH of a neutral aqueous solution at 37 °C, which is the normal human body temperature.
In the preparation of esters, the reaction product was extracted with 5% of sodium bicarbonate solution in the isolation step. Why? What gas was evolved during this washing step? Write a balanced equation for the reaction that produced it.
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
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