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10 ml of a solution of KCl containing NaCl gave on evaporation 0.93 g of mixed salt which gave 1.865 g of AgCl by the reaction with AgNO3 . Calculate the quantity of NaCl in 10 ml of solution.
A 15.0 g piece of iron (Cp = 25.09 J/mol-C) is heated to a temperature of 47.0 ?C and then placed in contact with a 275 g piece of copper at 20.0 ?C (Cp = 25.46 J/mol-C). What was the final temperature of the two pieces of metal?
Why is the C-C bond length in naphthalene C10H8 between the typical single C-C bond length and the typical C=C double bound length
The molecules CO2 and SCL2 are both of the general molecular type AB2, but one is polar and one is not. Which molecule is polar?
Explain what is the concentration of Pb2+ must be exceeded to precipitate PbCl2 from a solution that is .01M in the chloride ion Cl- Ksp for lead Chloride is 1.17x10-5
Divers experience a problem known as the bends when they come up to the surface too fast. Write an essay linking this phenomenon with solubility.
Calculate the specific heat capacity of this sample of mercury if The amount of energy required to heat 2.00 grams Hg from 50 degrees C to 85 degrees C is 9.87 J.
One mole of CaCO3(s) is placed in an evacuated cylinder that is fitted with a frictionless piston. It is heated to 800 degrees C at which point it decomposes to CaO(s) and CO2(g). Calculate the work done assuming complete decomposition at 1.00 bar..
using a solution that is prepared by mixing 11.5 g of c6h12o6 glucoseof mw 180 amu in 279 ml of solution then determine
What are the two compounds that might be in the unknown? if weighing 0.4862g when heated barely changed droppping to 0,4855g, when the product was converted to a chlorid the mass went up to 0,5247
Benzene (l) has a vapor pressure of 0.1269 bar at 298.15 K and an enthalpy of vaporization of 30.72kJmol^-1. The Cpm of the vapor and liquid phases at that temperature are 82.4 and 136.0 J K^-1 mol^-1, respectively. Calculate the vapor pressure of..
Lactic acid, HC3H5O3, is a monoproctic acid that forms when milk sours. An 18.50 ml sample of a solution of lactic acid required 17.52 ml of 0.1550 M NaOH to reach an end point in titration.
an old synthetic procedure starts by calling for fifteen kilo grams of sulfuric acid. if your largest reaction vessel
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