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What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid, Ka1 = 4.2e-7 and Ka2 = 4.8e-11.
A) 5.1e-5
B) 2.5e-2
C) 4.8e-11
D) 1.0e-4
E) 4.2e-7
How many grams of the solid can be formed from 286 grams of calcium nitrate and 136 grams of Phosphoric acid?
a new hydrocarbon with molecular formula C20H14 is obtained in low yield. The 13C NMR of this new product shows three peaks in the 120-150 ppm range and one peak at 54 ppm.
Which of the following are true statements ?
What volume of H2 could be produced at a temperature of 19 oC and a pressure of 764 torr by the reaction of 2.98 g of aluminum with hydrochloric acid.
would be decomposed by a complete reaction with one drop of water? Assume that 1 drop ~ 0.05 mL. If you started with 0.4 g of trityl fluoborate, how much of it would have been left?
What are the main mononitro products of the nitration of the following compounds - Write structural formulas for the compounds
How much PV work is done (in kilojoules), if 90.0 g of ethylene and 125 g of HCl are allowed to react at atmospheric pressure and the volume change is -71.9 L?
Determine the expression for the rate of reaction with respect to each of the reactants and products
A L flask is filled with 1.35 g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.45 atm.
What are the equilibrium partial pressures of CO and CO2 if CO is the only gas present initially, at a partial pressure of 0.872 atm?
the lead in lead pencils is actually almost pure carbon, and the mass of a period mark made by a lead pencil is about 0.0001g. How many carbon atoms are in the period.
for each formula unit of sodium decahydrate: Na2SO4 * 10H2O, a) how many atoms of each kind are present? B) how many water molecules would be liberated for every molecule of the hydrate that is decomposed by heating?
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