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Suppose were to return your 97-106 C fraction to the empty boiling flask and redistill it, might expect it all to distill between 97-106C as it did the first time. It actually yields a few distillate in all four boiling ranges. Define why?
A titration of 200.0 mL of 1.00 M H2A was done with 1.10 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 × 10-5, Ka2 = 3.1 × 10-9. Calculate the pH after 600.0 mL of 1.10 M NaOH have been added.
determine calorimeter constant b) determine reaction enthalpy for the Zn / HCl reaction c) if ?fHo (ZnCl2 aq) is -482.2 kJ mol-1 and ?fHo (HCl aq) is -165.2 kJ mol-1, what is you percent error
Draw the skeletal structure of the major organic product formed inthe reaction below when the second step is heated to reflux.
If 2 new elements have been discovered and one is R, a new element from the family with 3 valence electrons and Z, a new element from the family with 6 valence electrons. Write the formula for the binary compound between element R and element Z.
Explain the difference between the Bohr model for the hydrogen atom and the quantum-mechanical model.
Assume that all of the atoms fit together next to each other like placing tennis balls in a cardboard box. The second layer directly on top of the lower layer.
Draw a Lewis structure for SO2 in which all atoms obey the octet rule. Show formal charges. 2 Draw a Lewis structure for SO2 in which all atoms have a formal charge of zero. Explicitly showing the zero charges is optional.
Suppose that for the precipitation of the stock solution of borzac, the solid borax reagent is contaminated with a water-souble substance that does not eact with HCl.
If the vapor pressure of PCl3 gas above the liquid were 0.085atm at 30 degrees Celsius, would you expect the reaction to proceeds towards more evaporation or would you expect condensation of gas into liquid
How can 1-bromopropane be used to prepare each of the following
If you compare D-galactose to L-galactose, all groups attached to the carbon skeleton of the D-galactose are on the opposite side compared to L-galactose
A balloon is inflated from 0.0100 L to 0.500 L against an external pressure of 10.00 atm. How much work is done in joules? 101.3 J = 1 L x atm
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