Quadratic equation

diluted with DI water and reacted to produce an unknown amount of FeSCN2+ ions in an equilibrium reaction. The absorbance of each solution was found using a spectrophotometer, the first five of which was used to create a calibration curve, whose equation relates the concentration and absorbance of FeSCN2+ ions. Theories…

Genealogists photograph tombstones to document the birth, death and burial information of their ancestors. This post will give you some tips on how to get the best possible results when taking those important pictures. Locating Cemeteries Your first challenge might well be just getting to the cemetery. Hopefully you have an obituary or burial record for your ancestor that gives the name of the cemetery. Depending on how old the record is, finding the cemetery can be very easy or impossible.…

A. i) The rate of a reaction is the change of a substance’s concentration per units of time. The reaction rate of an experiment is dependent on many things including concentration, presence of a catalyst, and, most importantly, temperature. Temperature and reaction rate are directly correlated, which means that as one increases, so does the other. It is a general approximation that the rate of a reaction will increase by a factor of two for every 10°C jump in temperature. Increased temperature…

change in the concentration of reactants and products over time. The change of I2- concentration is used to determine the rate of concentration because the I2- reacts quickly with the thiosulfate ion that turns to the dark blur complex. According equation of this reaction, I2 (aq) + 2S2O32- (aq) ↔ 2I- (aq) + S4O62-, the reaction rate of I2…

After performing this experiment students are able to grasp a better understanding of the rates of chemical reactions and the ability to control them. In this specific experiment the experimenter was able to measure the concentration of at least one of the reactants or products as a function of time, S2O32-. The experimenter was able to measure the initial and final concentrations of S2O32- in order to calculate the rate formula, Rate = k[I-]m[S2O82-]n.In this experiment different factors were…

Dungeons and Dragons defined my high school experience. My friends from the high school marching band and I would gather at my house every weekend to roll dice and visit the fantastic world of Loodle Loo. The world of Loodle Loo is the unique game-world in which my friends and I play. From eight grade, to senior year, to now, my sophomore year in college, my dear nerdy friends and I have spent every weekend we can going on wild (mis)adventures in Loodle Loo. The characters involved are original,…

INTRODUCTION The trends in physical properties of organic compounds such as boiling points and melting points can be deducted from their structures, including size (molecular weight, surface area), shape and functional groups. These factors significantly influence the strength of the intermolecular forces of attraction present; and the nature and strength of intermolecular forces determine the variations in boilingpoints of organic compounds. The boiling point of a liquid is the temperature at…

Fundamental Theorem of Calculus The Fundamental Theorem of Calculus evaluate an antiderivative at the upper and lower limits of integration and take the difference. This theorem is separated into two parts. The first part is called the first fundamental theorem of calculus and states that one of the antiderivatives of some function may be obtained as the integral of the function with a variable bound of integration. The second part of the theorem, called the second fundamental theorem of…

All types of kids will die someday no matter how hard you try to make their lives better economically; similar to the tale “Kids Who Die” by Langston Hughes. Hughes was a literary icon well known for writing about the African Americans’ experience with racism and discrimination during the 1950-1960’s. He was the leading voice of the Harlem Renaissance promoting upcoming young poets. On the other hand, he was the first black poet to support himself through his writing, according to the Poetry…

Who doesn’t like to count stars at night? Especially a child, when he/she looks at the sky for the first time, his/her heart gets filled with many questions. Every time they learn something new, they come up with even more and more questions. Can you recall how many times you experienced something like this when you were a child? All the questions you wondered if they were true. I can recall my experiences from the past, looking at the night sky, I always wondered if there’s someone living…