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When determining the melting point of your pure benzophenone, some of the molten material had solidified high on the thermometer and wire stirrer. How would your calculated value for the molecular weight of your unknown been affected (high, low, no effect) if this benzophenone failed melt and was not a part of the final mixture in the tube?
What volume of concentrated HCl (12 M) and what weight of solid tris-(hydroxymethyl)aminomethane (as the base) are required to make 100 mL of 0.250 M buffer, pH 8.0 (pK of Tris hydrochloride if 8.0)?
A 20.0-mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
Consider the reaction CaCN2 + 3 H2O ! CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced?
Why an anti-addition is formed once the acid protonates an oxygen in a ring opening reaction with epoxides and why a trans diol is the only thing that can be formed
a mixture containing only al2o3 fw101.96 and fe2o3 159.69 weighs 2.019 g.when heated under a stream of hydrogen
Electron configurations are a shorthand form of an orbital diagram, describing which orbitals are occupied for a given element. Generate the electron configuration of arsenic (As)
Determine whether each of the following compounds would be best represented by an ionic or a covalent Lewis structure.
Consider the situation in which 1.60 mL of an aqueous CuSO4 solution of unknown concentration is diluted to a volume of 10.00mL.
When 1.5173 of an organic iron compound containing C, H, O, and Fe was burned in O2, 2.838 g of CO2 and 0.8122 g of H2O were produced. In a separate experiment to determine the mass
assume that the wet limestone process requires 1 metric ton of caco3 to remove 90 of the sulfer from 4 metric tons of
A 498 mL sample of laughing gas, N2O, is at 30 oC and 414 torr pressure. (a) How many gas molecules are present? (b) How many atoms are there
what is the empirical formula of a compound that has three times as many hydrogen atoms as carbon atoms but only half
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