Calculate the mass of lead
If 0.75 moles of CaO was reacted in the above reaction and all the heat was used to heat an amount of lead from 20.5 C to 23.4 C, calculate the mass of lead that was heated. Specific heat of lead = 0.128 J/g C.
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You have a 5.68 g sample of a compound with the formula XCl2, where X is a metal cation. When the sample is treated with an excess of silver nitrate, 10.3 g of silver chloride (AgCl) precipitate. What is the identity of the metal cation in the sam
Determine the theoretical and percent yields of ethanol if 684g sucrose undergoes fementation and 349g ethanol is ubtained.
MnO4- is deep purple in aqueous solution, while Mn2+ is colorless. Suppose a solution of KMnO4 is being used as a sample in a redox titration against iron(II) sulfate. What would be indicated by a sudden color change in the solution from purple to
A 60-lb uniform thin panel is placed in a truck with end A resting on a rough horizontal surface and end B supported by a smooth vertical surface .
How many kilograms of sodium carbonate must be added to neutralize 2.01×10^3 kg of sulfuric acid solution A tanker truck carrying 2.01×103 kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solut
You measure 2.34 g of K2Cr2O7 into a volumetric flask. You dilute the K2Cr2O7 with water to a volume of 250 mL. It takes 35.7 mL of this solution to titrate 17.8 mL of a solution of Na2C2O4 in the presence of excess acid. What was the concentratio
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Build a 6-string "cigar-box" electric guitar to demonstrate the following:A circuit that suppresses the second- and higher-order harmonics of the unmodified G string by at least 60 dB A circuit that provides an "effect" of your choice. Further inst
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