Find concentration of compound-original undiluted solution
A 10 mL sample of a solution of Pb(ClO3)2 was diluted with water to 21 mL. A 10 mL sample of the dilute solution was found to contain 0.021 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
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A mixture of Na2CO3 and BaCO3 weighing 0.2000 g requires 30.00 mL of 0.1000 N acid for complete neutralization. What is the percentage of each component mixture?
Sleep apnea is a disorder involving brief interruptions of breathing during sleep. Many patients who suffer from sleep apnea can benefit from devices that maintain a continuous positive airway pressure in their trachea
A quantity of 2.00x10^2 ml of 0.862 M HCl is mixed with 2.00x10^2ml of 0.431 M Ba(OH)2. What is the final temperature of the mixed solution?
The activation energy for the following reaction is 60. kJ/mol. Sn2+ + 2Co3+ → Sn4+ + 2Co2+
A 10 mL sample of the dilute solution was found to contain 0.021 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
Calculate the mass in grams of carbon dioxide that will be produced when 25.0 g of ethanol is burned.
The LANDSAT-C Earth resources satellite has a nearly circular orbit with an eccentricity of 0.00132. At perigee the satellite is at an altitude (measured from the Earth's surface) of 417 km. Calculate its altitude and velocity at apoge
Compound A is C4H9Cl and shows two 13C NMR resonances. Compound B is an isomer of compound A; it shows four 13C NMR resonances, and in the spin-coupled mode the resonance farthest downfield is a doublet. Identify compound B
The canister is placed in an oven until all the rm H_2O has boiled off and the canister is empty. How much energy in calories was absorbed?
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