Generally, the exact concentration of the analyte must be known to achieve accurate results. The concentrations are usually expressed in units of moles per liter (mol/L). After the titration has been carried out, the concentration of the titrant, information from the balanced chemical reaction bet...
The concentration of the substances at the given times, the stoichiometric relationship in the reaction, the degree to which the reaction has been completed, and the reagent concentrations, are then calculated. A continually-operated process generates a fluid flow from which samples are taken at ...
Is it possible to get a negative value for concentration? Explain. Why are you instructed in the titration procedure to use a dropwise rate? What could happen if you did not use a dropwise rate? How long would it take the concentration O2 to decreas...
Experiments in the field of chemistry involves different techniques and methods to determine the concentration, composition, and properties of a sample. One of the most common techniques performed in determining the concentration of a known solution (such a...
If a titration of 0.5533 grams of KHP needs 25.84 mL of a NaOH solution to reach the equivalence point, what is the concentration of the NaOH? How to find molar mass from titration? What is the molarity of NaOH if it takes 40.0 mL of NaOH to ...
For school, we performed a back titration involving one brand of aspirin and were told to determine the quantity of acetylsalicylic acid in a single tablet. sodium hydroxide was added in excess then the solution was heated. the excess unreacted NaOH was then reacted with HCl. my calculations ...
For example, if two titration curves were analyzed globally with a tenfold difference in constant antibody concentration, the highest concentration of antibody used would be assigned a DF of "1" and the titration curve with the lower concentration of constant antibody would be assigned a DF of ...
Purification of the de-crosslinked chromatin was performed using the QIAquick PCR Purification Kit from Qiagen. The concentration was determined using the Qubit fluorometer and Quanti-iT™ PicroGreen® dsDNA Kit according to manufacturer instructions. ChIP quality control and library preparation for hi...
Glucagon secretion at 5 mM was significantly different from that at 11 mM glucose concentration (one-way ANOVA followed by Tukey's multiple comparison test). Curves are shown as average ± SEM. (B) Cartoon depicting our view of the glucose homeostat. Fluctuations in glucose concentration (Δ ...
The standard Whatman filter paper commonly used for blotting of cryo-EM grids has a high concentration of Ca2 + and other divalent metals. Upon blotting, the resulting film on the grid has a very low volume, which, when in contact with the filter paper for a prolonged time (~ 6 s), ...