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Which is the best solvent for recrystallizing acetanilide, water or dichloromethane (CH2Cl2)? Explain your answer to receive lifesaver rating.
Carbonyl fluoride, , is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, via the reaction
What is the relative kinetic energy between the electron and proton after ionization, that is r=infinity? C) Assume that the electron has all the kinetic energy in part
1.two metal strips weighing 100g each that are placed into a cylinder that contains h2o.in one case we observed the
Aluminum has many different isotopes. What percentage of the mass of 26Al is attributable to its neutrons
What is the boiling point of water at an altitude where the ambient air pressure is 0.61 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.
1)MgBr2 and Pb(NO3)2 2)CuSO4 and H2S write ionic equation (molecular reactions, ionic equations and net ionic equations indicating the spectator ions in these reactions)
Calculate the equilibrium constant for the following reaction: (Ka of HCOOH = 1.7 x 10^-4) HCOOH (aq) + OH-(aq) HCOO-(aq) + H2O(l)
grignard reagent made from magnesium and 1-chloro-2-methylpropane with lables charges on the C-Mg bond
56.0 mL of a 1.20 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 157 mL of water. What is the final concentration?
A this lead apron is used in dental offices to protect patients from harmful x rays if the she measures 75.0 cm by 55.0cm by 0.10 cm and the density of lead is 11.3 g/cm what is the mass of the apron in grams
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
A compound contains 69.94 percent iron and 30.06 percent oxygen. What is its molecular formula if the molar mass of the compound is 199.55 grams per mole?
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