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The following pairs of soluble solutions can be mixed. In some cases, this leads to the formation of an insoluble precipitate. Decide, in each case, whether or not an insoluble precipitate is formed.
K2S and NH4ClLi2S and MnBr2CaCl2and NH4CO3NaCl and K3PO4Ba(NO3)2and Ag2SO4
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
What method will you utilize to remove the organic liquid from the naphthalene? What is the name of the organic liquid being removedand why does this method work?
Performing the elimination with potassium tert-butyl alcohol. At what temperature will the reaction mixture begin refluxing?
An experiment shows that a 250 mL gas sample has a mass of 0.430 g at a pressure of 728 mmHg and a temperature of 26 C. What is the molar mass of the gas?
Calculate the millimoles of copper (II) sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
If 3.8 kcal of energy is released when 1 gram of glucose is combusted, calculate how many kcals are released when 0.689 moles of glucose are combusted
Consider two ionic compounds NaCl and BaO. Both materials have the same crystal structure where each ion is coordinated by six neighbors of opposite polarity (fcc rocksalt structure)
The normal boiling point of ethanol is 78.4 degrees C, and at this temperature ?vapHθ = 38.7 KJ mol-1. Calculate the value to which the pressure must be reduced to boil ethanol at 25 degrees C in a vacuum distillation.
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
Nitrogen forms several gaseous oxides. One of them has a density of 1.27 g L-1 measured at 764 mmHg and 150C. write the formula of the compound
What is the average rotational energy assuming that only J=0 to 4 levels are populated in the vibrational ground state n=0?
The Delta G for the freezing of H2O(l) at -10 Celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610J/mol
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