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Your metropolitan area has been warned by the EPA to lower sulfur dioxide and nitrogen oxide emissions or it will lose substantial federal funding.
If a piece of Calcite (Calcium Carbonate) is put into the lake, would it tend to dissolve? Calcium carbonate solubility is 10^-8.35 M2.
For HCN in water, Ka = 2.0E-10. Calculate the fraction of cyanide that exists as the anion rather than in the molecular form at pH values of 4, 7, and 10.
Calculate the amount of calcium carbonate (mg) dissolved per liter of rainwater. pKa1=6.33, KCO2=3.388e-02
A water sample has a pH of 8.21 and a total calcium concentration of 143 ppm.
Coal combustion can affect freshwater or marine (saltwater) organisms in different ways.
Describe the 4 phases of demographic transition, including if the population is stable, growing, or declining in each. ·
What mass of lead would potentially be recovered from a crop planted on one square kilometre of soil with 280 ppm lead?
Assume a constant temperature of 298 K and that the volumes of the two solutions are additive.
The crystal field splitting energy for TiF6^-3 is 203 kJ/mol. At what wavelength does the maximum absorbance of light occur for this complex?
The formation constant for Cu(NH3)4(exponent 2 positive) is 2x10(exponent 12). What is the ratio of Cu(NH3)4(exponent 2 positive)
For AgCl, what will occur if 250ml of 1.5 A 10^-13 M of NaCl is mixed with 250mL of 2.0 A 10^-7 M of AgNO3?
Write a balanced net ionic equation for the reaction of each of the following compounds with water.
How much MnO2 should be added to excess HCl to obtain 275mL of chlorine gas at 5.0C and 650 mmHg?
The question arises concerning the density of saltwater: is it because water molecules have moved out of the system, replaced by sodium and chlorine ions.
Each row across the periodic table is called a period and the elements gradually change properties from left to right.
Determine the number of moles and percent by weight of sodium perborate and sodium carbonate in a given sample of Purex.
Write and balance the equation for the disproportionation of sulfite (SO32-) into sulfate and sulfide ions in basic solution.
Rank the following species from the strongest reducing agent to the strongest oxidizing agent: SO42-, SO32-, O3SO2SO32-.
Consider two metals: M and N. A strip of solid N is placed into 2mL of a 0.10 M M(NO3)2 solution. The solution changes from blue to green.
Six-coordinate CR(3) complexes of the type trans-(CrL4A2)n+, generally have magnetic moments consistent with three unpaired electrons.
Determine the oxidation state of the metal in each of the following complexes. Draw all linkage isomers and stereoisomers for each complex.
Expensive electronic equipment use gold-coated parts. Explain why this is based on chemical behavior.
How do you estimate the percentage covalent nature of different compounds using the Pauling's Electronegativity Scale?
In forming a chelate with a metal ion, a mixture of free EDTA (abbreviated Y^4-) and metal chelate (abbreviated MY^n-4) can buffer the free metal ion.