Chemistry Essays

Herbal medicines have been part of the ingenious way of living in the society since the earlier times. Primitive men have been using this kind of medicine as the primary method of medication without undergoing different industrial processes. Herbal medicines have really come a long journey way back to the …

1. How many moles does 80.0 grams of H2O represent? 2. How many moles does 45.0 grams of C6H12O6 represent? 3. How many moles does 22.0 grams of CO2 represent? 4. How many moles does 56.0 grams of N2 represent? 5. What is the mass of 2.0 moles of LiOH …

The objectives of this lab are, as follows; to understand what occurs at the molecular level when a substance melts; to understand the primary purpose of melting point data; to demonstrate the technique for obtaining the melting point of an organic substance; and to explain the effect of impurities on …

Kinetic energy is energy in action, while potential energy is stored energy. Structurally variant atoms, which have the same number of protons (and electrons), but differ in the number of neutrons they contain Atomic weight of an element is approximately equal to the mass number of its most abundant isotope. …

In this lab, I will be able to find two things. First, I will determine the molarity of saturated salt solutions and secondly I will calculate the Ksp and percent error. I am should prove that the concentration of a solid does not change and also I will get the …

Background information: A hypertonic solution is a concentration that is higher than the solution. A Hypotonic solution is a concentration that is lower than the solution. An isotonic solution is a concentration and solution that is the same amount. Hypothesis question: What will happen if you put a potato in …

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using = .05, what is the value the test statistic? Women Men Sample size …

Thermodynamic cycle can be divided into two that are power cycle and refrigeration cycle. The cycle that produce net amount of works is called power cycle. The power cycle that can remain it working fluid in gaseous phase is called gas power cycle. There are many types of cycle in …

A 1.000g sample of unknown analyzed by Reaction 7-2 gave 2.500g of bis(dimethylglyoximate) nickel(II). Find the wt% of Ni in the unknown. 7-8) The man in the vat. Once upon a time, a workman at a dye factory fell into a vat containing a hot concentrated mixture of sulfuric and …

Rayon is the oldest commercial manmade fiber. The U. S. Trade Commission defines rayon as “manmade textile fibers and filaments composed of regenerated cellulose”. The process of making viscose was discovered by C.F.Cross and E.J.Bevan in 1891. The process used to make viscose can either be a continuous or batch …