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Find the volume of a solution.
Compute the volume of 0.0500M Ba(OH)2 solution that contains the similar number of moles of Ba(OH)2 as 120.0mL of 0.0800M Ba(OH)2 solution.
A sample of O2 was collected over water at 25C and .865 atm. If the total sample volume was 2.538 L, how many moles of O2 were collected?
Write three reactions for the oxidation of pyrite and explain how these can result in the production of acid waters that are enriched in trace metals and metalloids.
A 425-m 3 (15,000 ft 3 ) basin, equipped with 10 gas dispersers of a new design, is to be installed for stripping hydrogen sulfide, H 2 S, from wastewater. The dispensers, each to use air at a rate of 7:08 × 10 -3 m 3 / ...
Potassium and sodium chloride are similar in charge and they both have the same anion. When comparing sodium chloride (36 g / 100 mL at 0 oC) and potassium chloride, which has a higher solubility at 0 oC?
Titanium reacts with hydrogen peroxide in 1.00 M sulfuric acid to form a colored complex. If a 2.00x10^-5 M solution absorbs 31.5% of the radiation at 415 nm, what would be: the absorbable, the transmittance, and the per ...
What mass of NaH 2 PO 4 must be added to 1.20 L of 0.20 M Na 2 HPO 4 to make a buffer solution whose pH=6.90? pK a2 (H 3 PO 4 )=7.21.
What are the major sources and emissions of air pollution in your community? What chemicals are they emitting, and how are these chemicals transported through your community (non-point sources, smokestacks, etc.)? Were y ...
Using the Debye-Hucket equation, calculate the activity coefficients for the acidic and basic forms of bromocresol green, HX- and X2-, for a solution with an ionic strength of u=0.1M.
Consider a string with a length of 54.5 cm tied at both end (like on a stringed instrument). If the frequency of the first harmonic on the string is 256 Hz, determine the speed of the wave in the string. Post your answer ...
A 0.10 M FeS04 (aq) solution is electrolyzed between a magnesium cathode and a platinum anode with a current density of 1.50 mA cm-2.The hydrogen over potential is 0.60 V. What will be the concentration of Fe2+ions when ...
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