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A solution containing a mixture of metal cations was treated with dilute HCl and no precipitate formed. Next, H2S was bubbled through the acidic solution. A precipitate formed and was filtered off. Then, the pH was raised to about 8 and H2S was again bubbled through the solution. A precipitate again formed and was filtered off. Finally, the solution was treated with a sodium carbonate solution, which resulted in no precipitation. Which metal ions were definately present, which were definately absent, and which may or may not have been present in the orginal mixture?
Ag+, Hg2^2+, Pb2+, Sn2+, Mg2+, Al3+, Li+, Ca2+ , Cu2+, Hg2+, Ni2+, Sb3+
whats the amount of heat required to raise the temperature of 165 g of water from 12.0 C to 88.0 C (sp. heat of H20(l)= 4.18 J/g)
Assume constant temperature and the reaction goes to completion, producing as much nitrogen dioxide (NO2) as possible according to the following equation. What is the total pressure, in atm, in the system after the reaction?
A 70 piece of ice at 0 is added to a sample of water at 6. All of the ice melts and the temperature of the water decreases to 0. How many grams of water were in the sample?
how long it will take the same ammount of gaseous I2 to effuse from the same container under identical conditions.
What are the possible values for the principal quantum number (n), the azimuthal quantum number (l) and the magnetic quantum number
The aluminum ion reacts with the hydroxide ion to form a precipitate of aluminum hydroxide. Calculate the concentration of aluminum ion to just begin the precipitation of aluminum hydroxide in a solution that has a hydroxide concentration of 1.0 x..
A solution of I2 was standardized with ascorbic acid. Using a 0.100 g sample of pure ascorbic acid, 25.32 ml of I2 were required to reach the starch end point.
A gas occupying a volume of 263 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
Explain Pressure of dry butane gas, Chemistry lab write up and I have to determine the pressure of the dry butane gas.
you perform a titration between a solution of ammonium (Kb = 1.8*10^-5) and HCL. you have a 200 ml of 50.0mM ammonium solution titrated against
A 2.18-L flask is filled with propane gas (C3H8), at 1.00 atm and -16.0°C. What is the mass of the propane in the flask?
Consider the temperature change, together with the volume and concentration of the acid and base, noted in the HAZMAT team's response regulation information
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