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In a reaction where PbCl2 precipitate was formed using Pb(NO3)3 and HCl, explain why the PbCl2 precipitate dissolved when water was added. (What was the effect of the added water on the [Pb2+] and [Cl-]? In what direction would such a change drive the reaction?
Using structural formula, write a balanced equation for the phosphoric acid catalyzed reaction of cyclohexanol to give cyclohexene.
Phosphate buffer has 3 ionizable groups, with pKa's of 2.15, 7.2, and 12.45. A 1.20 M solution of this buffer (250 mL) is found to have a pH of 6.0. A biochemist adds 30 mL of 1.0 M NaOH to this buffer. What is the resultant pH?
A mixture of four gases exerts a total pressure of 860 mm Hg. Gas A and B, both exert 220 mm Hg, Gas C 110 mm Hg. What pressure is exerted by gas D?- When does a real gas behave like an ideal gas?
Once the solvent front reaches the top of the chromatographic paper,solvent begins to evaporate from the top edge of the paper, and the remaining solvent continues to move up the paper.
The bond distance and dipole moment calculated for the highly reactive gas phase OH molecule are 0.98Ao and 1.78D, respectively. Compute the effective charges on the O and H atoms of the OH molecule (in units of the electronic charges).
A certain human gene was shown to have only 80% of its DNA sequence identical to that of an ape, but its corresponding protein sequence has 95% identity
How many calories are required to heat 25.0 g of platinum (specific heat capacity = 0.032 cal/g.K) from 24.5 oC to 75.0 oC?
what is the density of 53.4 wt% aqueous NaOH if 16.7 mL of the solution diluted to 2.00L gives 0.169M NaOH
the meta and para forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phynelene diamine
Greg Nard added an equivalent of 3,4-epoxy-4-methylcyclohexanol to an ether solution of methyl magnesium bromide and then added dilute hydrochloric acid.
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Name three compound types of organic compounds (families) that have the -C=O functional group but not the hydroxyl group.
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