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The equilibrium constant Kc for the reaction C--><-- is 5.10e-5. The initial composition of the reaction mixtures is [C]=[C]=[E]= 1.10e-3 M. What is the equilibrium concentration of C,D,E?
solution of the monoprotic acid HBr is titrated, and 85.00 mL of 0.59M NaOH is required to reach the equivalence point. What is the original concentration of the acid solution?
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
Why does BeCO3(s) rapidly decompose to BeO(s) and CO2(g) at low temperature, but CaCO3(s) must be heated to undergo decompostion to CaO(s) and CO2(g)
Table salt, NaCl(S), and sugar, C12H22O11 (s), are accidentally mixed. A 4.50-g sample is burned and 2.90 g of CO2 (g) is produced. What was the mass percentage of the table salt in the mixture
what particle or type of radiation needs to be included to balance the equation? 234Th ? ? + beta particle? Please explain why you chose your particular answer
Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme
verify the law of multiple proportions for an element X, which forms oxides having percentages of X equal to 77.4%, 63.2%,69.6% and 72.0%
a high school girl was getting ready for a big date but discovered with horror that her silver necklace was tarnished.
A solution contains barium nitrate and ammonium chloride. Which of the following reagents would separate the two cation by making only one of them precipitate.
The evaporation of water H2O(l) ->H2O(g) is endothermic: Change in T degree +44.01 kJ Determine the minimum mass of water (in ) has to evaporate to absorb 183 joules of heat?
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
If this arsenic is present as arsenate, AsO4^3-, what mass of sodium arsenate would be present in a 1.10L sample of drinking water that just meets the standard
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