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Consider a solution of 0.1 M Zn2+ and 0.1 M Cu2+ that is saturated with H2S. Explain the solubility product constants for ZnS and CuS are 1.1e-21 and 6e-36 respectively. Demonstrate that both ZnS and CuS will precipitate at a pH of 8.
Calculate the energy, in joules, required to excite a hydrogen atom by causing an electric transition from the n=1 to the n=4 principal enegry level
A vitamin tablet contains 501 mg of vitamin C (C6H8O6). How many vitamin C molecules are contained in the tablet?
determine the original mass of liquid, G, that was placed in the container. (Ignore the volume occupied by the liquid in these calculations)
an aqueous solution of cacl2 has a vapor pressure of 84.0mmhg at 50 c . the vapor pressure of pure water at this
Molecular chlorine and molecular fluorine combine to form a gaseous product. Under the same conditions of temperature and pressure it is found that the volume of Cl2 reacts with three volumes F2 to yield two volumes of the product.
How many reducing ends are in a molecule of corn starch (amylopectin) that contains 200,000 residues with a branch every 100 residues? Explain
What is the mass percent of sucrose (C12H22O11, Mm=342 g/mol) in a 0.350-m sucrose solution?
A 50.0 mL aqueous solution containing 1.08g of a blood plasma protein (a molecular compoud) was found to have an osmotic pressure of 5.85 mmHg at 25degreesC. What is the molar mass
The johns family has a water tank that can deliver 10,000 cu ft of CO2 qt 20 degrees celcius with a pressure of 1ATM If the johns tank volume was cut in half and the pressure increasses
What are some ways to induce recrystallization (Name 3), if your solute refuses to recrystallize after performing the required 7 steps? the seven-step recrystallization procedure
A 1.07g sample of a noble gas occupies a volume of 363mL at 35C and 678mmHg. Indentifythe noble gas in this sample
What weight of A would be removed from a solution of 21 g of A in 50 mL of water by a single extraction
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