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500.0 mL of 0.110 M NaOH is added to 625 mL of 0.250 M weak acid (Ka = 5.62 × 10-5). What is the pH of the resulting buffer?
What is the molarity of urea, CO(NH2)2, if 98.3 mg of the 97.9% pure solid is dissolved in 5.00 ml of aqueous solution?
The energy emitted from an atomic nucleus is found by ?' natural law scientific theory There is the same number of molecules in equal volumes of gases.?
How many molecules of carbon dioxide are produced when 123 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
Calculate the change in temperature for 4.5g of CaCl2 dissolved in 90.0mL of H20. Assume that calorimeter absorbs no heat. (Ccal=0)
assuming zinc is the limiting reagent, how much zinc (in grams) do i need to fill a 1.0 liter balloon with hydrogen gas at a temperature of 25 degrees celcius and a pressure of 780 mmHg
How many grams of NaCl are contained in 350 ml of a 0.25 M solution of sodium chloride?
Develop a crystal field splitting diagram for the following geometries by considering the crystal field generated by the ligands interacting with the d orbitals on the metal (ML2).
when 50.0 g of Copper are reacted with silver nitrate solution Cu + 2AgNo3 - Cu(No3)2 +2 Ag 148 g of silver are obtained. what is the percent yeild of silver obtained?
It is heated so that its pressure increases from 1.50 atm to 407 atm. Determine the work done on the gas during this process.
describe how these limestone objects are corroded by the sulfuric acid in polluted air, what chemical reaction is involved here?
An unknown organic compound has the empirical formula C2H2O. A solution of 3.775 g of the unknown compound dissolved in 12.00 g of water is cooled until it freezes at a temperature of 4.72°C.
Mt. Kilimanjaro in Tanzania is the tallest peak in Africa (19,340 ft.). On a particular day, the barometric pressure at the top of the mountain was 330 torr. On that day, at what Celsius temperature did water boil on the top of the mountain?
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