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Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case.
A: 2.0*10-2 M CaCl2
B. 2.4*10-3 M Fe(NO3)2
C. 1.8*10-3 M MgBr2
A 5.325g sample of methyl benzoate, a compound found in perfumes, was found to contain 3.758g of carbon, 0.316g of hydrogen, and 1.1251g of oxygen.
a sample of a mixture of cac2o4 and mgc2o4 was dissolved in about 100 ml of aqueous acid. one half of the solution was
Typical rate of deposit of dust (dustfall) from unpolluted air was reported as 10 tons per square mile per month. Express this dustfall in milligrams per square meter per hour.
a steel reaction vessel has a movable piston that is set to allow an enclosed sample of gas expandnbspand contract
Calculate the volume of air that an adult person exhales in an 8 hour day. Assume that each breath has a volume of about 0.5 and that the person exhales 15 times a minute.
Calcite (CaCO3) has two types of bond. What are the two types? Demonstrate which is the stronger by calculating the degree of ionic character of each bond
The equilibrium constant Kc equals .0952 for the reaction at 227C CH4OH(g) CO(g)+ 2H2(g). wHAT us the value of KP at this temperature
Typically, the concentration of hydronium, H+, or hydroxide,OH- , ions in an aqueous solution is less than 1M . It is not uncommon to have hydronium ion concentrations that are much smaller
Experimental solid-oxide fuel cells that use butane (C4H10) as the fuel have been reported recently. These cells contain composite metal/metal oxide electrodes and a solid metal oxide electrolyte. Consider the following unbalanced half-reactions:
The bromocresolgreen end point of the titration was reached after the addition of 30.00 mL of hydrochloric acid solution. Calculate the concentration of the acid solution.
When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is 4.50 atm, is opened, what will be the final pressure in the two bulbs?
consider the following equation for which keq 1.4e83 at 25oc.2 h2g o2g h2olwhat is the value of keq for the reaction
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