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Problem- A certain metal melts at 264 C, and its heat of fusion is 29 J/g. Its average specific heat is 0.21 J/gC as a liquid and 0.27 J/gC as a solid. How much energy is required to heat 941 kg of the metal from 26 C to 339C?
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diazonium salts couple with phenols in slightly alkaline solution. what effect does the ph of the solution have on the
Calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees celsius. (water in j/g degree celsius = 4.184, cal/ g degree celsius = 1)
The small bubbles that form on the bottom of a water pot that isbeing heated (before boiling) are due to dissolved air coming outof solution.
Draw the structure(s) of the carboxylic esters with the molecular formula C5H10O2 that contain a branched four-carbon chain.
The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HCl and CH3CH2NH2 is
The air tanks used by a certain fire department each contain 25.0 l of air at a pressure of 200.0atm and a temperature of 293 k. Assume the average fire fighter exhales 0.500l of air per breath at a temperature of 310.0 k
Calcium nitrate is also product but it stays in solution as ions because it is soluble. Write the equation for this reaction making sure that it is balanced electronically and atomically. Remember, the result is calcium nitrate and lead (II) iodid..
For the equalibrium PCl5(g) PCl3(g) + Cl2(g), Kc= 2.0 x 10^1 at240 celcius. If pure PCl5 is placed in a 1.00-l container and allowed to come to equalibrium, and the equalibrium concentration of PCl3(g) is 0.23 M, what is the equalibrium concentr..
Concrete used in road construction is reinforced using steel bars in a grid, known collectively as After many years, rebar will begin to corrode, and the concrete will weaken. Studies are ongoing regarding the best metal to be a sacrificial anode ..
A sample gas at standard prssure is heated from 20c to 200c. If the volume remains constant. What is the fimal pressure in mmhg
A can of diet soda floats when placed in a bucket of water. A can of regular soda sinks in the same bucket.Fill in diet soda, regular soda, or water for the following,
Solid barium nitrate is slowly added to 175mL of a 0.0414 M ammonium carbonate solution. Explain what is the concentration of barium ion necessary to just initiate precipitation is
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