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Calculate the percent yield of this organic reaction: C7H6O2------->C12H16O2. Molecular weight of C7H6O2 is 122.12 amount used 100g, Molecular weight of C12H16O2 192.25 amount recovered 125.9 g
calculate the pH change that takes place when a 100mL of (a) 0.0500M NaOH and (b) 0.0500M HCl is added to 400mL of a buffer solution prepared by mixing 0.200M NH3
How many different aldols (b-hydroxyaldehydes), including constitutional isomers and stereoisomers, are formed upon treatment of butanal with base?
How many grams of the solid can be formed from 286 grams of calcium nitrate and 136 grams of Phosphoric acid?
lungs now contain 0.15 moles of oxygen gas, and 0.60 moles of nitrogen gas. If your lungs are at 1.4 atm of total pressure, what is the partial pressure of oxygen gas inside your lungs?
1.90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
KOH are diluted to 1L to give the same species produced by Al(OH)3. Write mass balance equations for aluminum and potassium.
Crystallization of sodium acetate from a supersaturated solution occurs spontaneously at constant temperature and pressure. What can you deduce about the signs of ?S and ?H for this process?
Diffussion controlled electrolysis proceeds on (a) planar and (b) spherical electrode under the conditions: n = 1, C = 1 mM, A= 0.04 cm^2, D = 1.5x10^-5 cm^2/s.
If Qp = 1.2 1020 and PO2 = 0.318 and PN2 0.812, what is the partial pressure of NO?
A sample of granite contains various oxides of silicon, aluminum, sodium, potassium, calcium, and iron. Each of these oxides gives the granite a coarse-grained texture.
What mass of iron is needed to supply the energy required to warm 15ml of water from 23 C to 37 C.
What is the latent heat of vaporization Tsat in kJ/mol? (Answers are 1366 kW and 28.4 kJ/mol) Please show work for good rating.
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