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The three isomers 0-,m-, and p-xylenes are are very difficult to distinguish via proton NMR. However they are instantaneously distinguishable via carbon NMR how? What do you expect to see for each?
what is the condensed structural formula for 22-dimethyl
a 10 ml sample of a solution of pbclo32 was diluted with water to 21 ml. a 10 ml sample of the dilute solution was
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 700 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 6.00?
Which element formed, according to the theory of the Big bang, before the first generation of galaxies formed
(NH4)2Cr2O7(s) ? N2(g) + 4 H2O(g) + Cr2O3(s) If 0.95 g of ammonium dichromate is used and the gases from this reaction are trapped in a 15.0 L flask at 23 °C, what is the total pressure of the gas in the flask. What are the partial pressures of N2..
An adiabatic turbine expands steam from 500oC , 3.5 MPa to 200oC and 0.3 MPa. If the turbine generates 750 kW, what is the flow rate of steam through the turbine
Suggest a reason why the cyclic intermediate in the formation of methyl-e-4-methoxycinnamte from p-anisaldehyde, might have two important groups in a trans relationship
determine the kelvin temperature required for a 0.0470 mol of gas to fill a balloon to 1.20 l under 0.988 atm of
Restricting yourself to straight-chain (unbranched) compounds, draw the structures of the possible constitutional isomers of pentene. There are two "variables" -- the position of the double bond; and cis/trans isomerization at that double bond.
a 1.0 l solution has a mixture of 0.05 m nah2po4 pka 6.86 and 0.10 m na2hpo4. how much 1.0 m naoh should be added to
The plant manager would like to dump the wastewater into a nearby river. The local water quality control regulatory agency will allow at most discharge of 30,000 lb/h at a maximum salt content of 0.5%. Draw a flow diagram. Complete a DOF analysis ..
If you find that the standard Gibbs free energy change for a reaction is 3.26 kJ/molK, what is the equilibrium constant for the reaction at 25.0 oC? Be careful with your units in the calculation.
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