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Calculate the following when 0.250 L of 0.259 M AgNO3 solution is mixed with 0.350 L of 0.300 M Na2CO3 solution. Ksp for Ag2CO3 is 8.46E-12. What mass of the precipitate forms? What is the concentration of Ag+ remaining in solution?
A hypothetical metal has a simple cubic unit cell with the edge length of 4.123 Å. Calculate the radius of the metal atom.
The amino acid histidine has three pKa's at 1.8, 6.0 and 9.3. In a 0.01 M solution of histidine, what is the concentration of protonated carboxylic acid at pH 7.4? The primary amine? The side chain?
when a 50.0-g nugget of pure gold is heated from 35.0 C to 50.o C, it absorbed 5200.0J of energy. find the specific heat of gold.
250 ML of a saturated aqueous solution of CaF2 at 25 degrees celsius is found to contain 0.0040 g of dissolved CaF2. Find Ksp of CaF2 in water at 25 degrees celsius.
0.0850 M in pyridine, C5H5N, and 0.0560 M in pyridinium chloride, C5H5NHCl The Kb for pyradine is 1.7x10-9
Dry Sand has a density of 1.5g cm^-3. A child's sandbox measuring 4 ft by 5 ft is filled with sand to a depth of 6 in. What is the mass of the sand in kg. in lb
When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type. Na2S2O3 + I2 ? NaI + Na2S4O6
Explain why two layers formed when 3 M NaOH was added to the ether solution after the initial separation. What solvents do the two layers represent? Which solvent forms the upper layer? Why?
The acceptable limit for mercury in drinking water is 2ppb. Does this correspoond to mercury in its elemental form (Hg) or in its ionic form (Hg^2)
Draw the structure of all alkenyl side products that could be formed by dehyradation of 2-methyl-2-butanol by and E1 mechanism. propose a mechanism for the formation of the alkene side products.
an ecobotanist separates the components of a tropical bark extract by chromatography. she discovers a large proportion
When gases are collected using displacement of water,some water vapor mixes in with the gas being collected.35.2 ml of H2 gas was collected over water at a temperature of 21 Celsius degree.
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