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What is the molarity of a solution made by dissolving 3.5 g of Ba(OH)2 in enough water to make 440 mL of solution?
treatment of 1.385 g of an unknown metal m with an excess of aqueous hcl evolved a gas that was found to have a volume
What volume of H2O(g) is produced when 7.90 mo of C2H4 (g) reacts at STP? C2H4 (g) + 3O2 (g) ----> 2 CO2 (g) + 2 H20 (g)
A compound A(C6H6) undergoes catalytic hydrogenation over lindlar catalyst to give a compound B, which in turn undergoes ozonolysis followed by workup with aqueous H2O2 to yield succinic acid and two equivalents of formic acid.
what molecule would give the following mass spec data? m/z =15, 29, 43, 57 provide the dominate peaks in the spectrum. the m/z =57 (m-29) is the base peak. and the mz = 43 and 29 ions are also abundent.
How many grams of water are formed when 5.00 g of butanol combust with excess oxygen according to the reaction shown below?
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740.0 torr and a temperature of 25.0°C.
Using the following data, calculate the V/T ratios and determine if Charles'Law is obeyed (verified). Volume hot dry air - 137.0 ml Volume water drawn into flask - 32.0 ml Temp. boiling water - 99.5 oC Temp.
Standard Addition Graph: Tooth enamel consists mainly of themineral calcium hydroxyapatite. Trace element in teeth ofarchaeological specimens provide anthropologists with cules aboutdiet and disease of ancient people
A gas absorbs 2.5 J of heat and then performs 13.1 J of work. The change in internal energy of the gas is
What is the solubility of PbSO4 in water at 25C if the solution already contains 0.25M Na2SO4. (Ksp for PbSO4 is 2.5 x 10^-8) include the solubility before the Na2SO4 is added.
A 1 gram sample of calcium was burned in chlorine to give a 1.95 g sample of pure CaCl2. the energy given off in this reaction was 30.3 kJ. given this information, find the heat of formation of 1 mol of CaCl2
Na+ cations have been successfully trapped into such capped carbon nanotubes. Explain what the frequency for the transition is between the two lowest energy states for a Na+ cation trapped in a CNT 2.0 cm long
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