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Sulfide precipitates are usually grouped as sulfides insoluble in acidic solution as well as sulfides insoluble in basic solution. Define why there is a difference between the two groups of sulfide precipitates.
Suppose a 10 mL sample of solution is to be tested for Cl- by adding .2 mL of .15 M AgNO3. What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form
Synthesis of a Liquid Crystal, experiment in which added 500 mg of cholesterol to 1.5 mL of dry pyridine. Then added 1.7 mmol of benzoyl chloride and heated the mixture.
Determine the empirical formula of perchloroethylene given that a 2.58-g sample yields 1.37g Co2 in a combustion analysis experiment. Add subscripts to complete the empirical formula.
the second line of the balmer series occurs at a wavelength of 486.13 nm. what is the energy difference between the
Consider radiation of wavelength of 4000 Angestroms, at a temprature of 3000 K. using a rayleighs- jeans law, calculate the energy per unit volume per energy wavelength?
Compute Kf for a solvent for which the molar mass is 145 g mole-1 as well as the enthalpy of fusion at the freezing point of 325 K is 17.9 kJ per mole.
A student adds an excess (more than she needs to react completely) of solid sodium hydrogen carbonate to a beaker containing exactly 675 mL of 0.220M coper(II)nitrate aqueous solution.
A by-product of the Witting-Rxn is triphenylphosphine oxide. At what step in the experimental procedure is this compound removed
If hydrogen were used as a fuel, it could be burned according to the following reaction: Use average bond energies to calculate for this reaction
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2094
Having trouble with a couple of study guide questions for Chemistry. Hoping someone can assist: PART 1: Calculate the pH of a buffer solution that is 0.250 M in HCN and 0.170 M in KCN.
How many grams of Na3PO4 will be needed to produce 550 ml of a solution that has a concentration of Na+ ions of 1.00M ?
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