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Which of the following sets of quantum numbers are not allowed in the hydrogen atom? for the sets incorrect, state what is wrong with each set.
a. n=3 l=2 ml=2
b. n=4 l=3 ml=4
c. n=0 l=0 ml=0
d. n=2 l= -1 ml=1
A reaction rate increases by a factor of 1000. in the presence of a catalyst at 25 C. The activation energy of the original pathway is 98 kJ mol-1. What is the activation energy of the new pathway, all other factors being equal
A solution contains 0.021 M Cl? and 0.017 M I?. A solution containing copper (I) ions is added to selectively precipitate one of the ions. At what concentration of copper (I) ion will a precipitate begin to form? What is the identity of t..
What is the rate of the reaction if the concentration of CH3Br is doubled? (b) What is the rate of the reaction if the concentration of NaOH is halved
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
A certain weak base has a Kb of 7.40 × 10-7. What concentration of this base will produce a pH of 10.11
The heat capacity of the calorimeter was 24.5J/0C and contained exactly 1250g water which increased from 24.620C to 27.430C. Calculate (Delta)U for the reaction in kJ/mol rxn
the normal freezing point of mercury is -38.9 c and its molar enthalpy of fusion 2.29kjmol. what is the entropy change
Infrared Spectroscopy Lab 1) Why must a sample for IR be dry. 2) How will the spectrum be affected if a background scan is omitted or improperly obtained. 3) The stretching from C-C single bonds is virtually invisible to IR . Why
0.2356 g sample containing only NaCl and BaCl2 yielded 0.4637g of dried AgCl. Calculate the percent of each compound in the sample.
Calculate the amount of heat in kj required to convert 157.7g of water to steam at 100 dgree.
Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced g of calcium and g of fluorine. If the second sample produced 294mg of fluorine, how many g of calcium were formed.
A buffer solution was prepared by mixing 25.0 ml of 0.5M sodium acetate with 35.0ml of 0.6M acetic acid. Calculate the pH. The Ka for acetic acid is 1.7x 10^-5
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