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1. A solid mixture may contain AgNO3, NiSO4, KCl, and Ca(NO3)2. Treatment of the solid with water leaves a white insoluble residue. The water soluble portion is colorless and gives a precipitate when treated with 1 M Na2CO3. Identify the components of the mixture.
2. Which of the acids that can be used to dissolve an alloy (i.e., mixture of metals) produces the largest number of volatile compounds containing cations of the qualitative analysis scheme?
3. Which compound of silver is the least soluble in both water and dilute strong acid?
4. Identify the cation and anion. Express the answer in terms of the formula of the salt. A green powder dissolves in water and gives a pure white precipitate with acidic AgNO3. When the solution is heated with H2O2 and NaOH, it turns a yellow color, which changes to orange in acid.
5. Consider the following mixture; FePO4 and AlCl3. Would it dissolve completely in water? Would it dissolve in 6 M HNO3 but not in water? Would it dissolve in 6 M NaOH? Would it dissolve in 6 M NH3?
Explain the structural feature of Acetanilide molecule - Identify one structural feature of the acetanilide molecule
Determine the empirical and molecular formula and draw the Lewis structure for a compound
The binding energy of electrons to gold is 492 kJ/mol. What is the longest wavelength of light shone on gold that will cause electrons to be ejected?
scuba divers has a volume of 8.0 L and a pressure of 140 atm at 20 degrees C. What is the volume of air in the tank in liters at STP?
If 0.628 moles of a substance weighs 77.3 g, what is the molar mass of the substance, in units of g/mol?
when 1-bromo-2-methylhexane undergoes solvoysis in methanol, four major products are formed.
A 1.000 g sample of a compound containing C, H and O is burned in excess oxygen, producing 1.783 g CO2 and 0.734 g H2O. Determine the empirical formula of the compound.
Calculate the vapor pressure lowering of a solution of 2.80 g of aspirin (molecular weight = 180.15 g/mol) in 45.0 g of methanol (CH3OH) at 21.2°C.
Complete the mechanism for the base-catalyzed racemization of the chiral ketone below by adding any missing atoms
The total amount of water runoff from the road is equal to a volume that would make the water on the roadway be at a depth of 0.4 inches if it all stayed on the roadway.
The heat of vaporization of 1.0 mole of water at 100°C and 1.0 atm is 40.6 kJ. Calculate the change in entropy for the process H2O(l) → H2O(g). Document your work here.
How many grams of LiCl are needed to make a saturate solution with 300 grams of H2O if the molality of the solution is 19.7.
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