Science Essays

Transition elements contain ions that present in aqueous solution as complex ions. A metal ion with a molecule called a ligand are called complex ion and it attached through coordinate covalent bonds. A complex salt is an ionic compound but it differs in the fact that there are these covalent …

1 Concept of Operations, Checklist June 13, 2003 Technical Content Recommendations & Review Criteria Purpose and Scope. This Checklist provides recommended technical content for concept of operations documentation. This document is not a mandatory life cycle document. However, it is useful during project initiation as a place to capture/document pre-project …

In clinical research, drugs, medicines and including pharmaceutical products such as cosmetics were produced. However, before it can be released to the consum ers, the products need to be tested first to determine whether they are safe or not. Animal testing has become one of the primary options in obtaining …

We chose this topic because it’s timely, and many women are getting pregnant. We are curious, why many of them are getting pregnant at the very young age, and what are the reasons why they do this premarital sex, what will be the consequences to the people who are involved …

Definition of ideal occlusion: the normal anatomical contact between teeth, more technically it is the relationship between the maxillary(upper) and mandibular(lower) teeth when they approach each other, as occurs during chewing or at rest. Ideal occlusion also known as a perfect arrangement between teeth without defect, features of ideal occlusion …

If you suspect that an individual is being abused, there are some necessary actions for you to take along with researching about what your companies policies and procedures around abuse are. Initially, if you suspect that a service user or worker is being abused, it is important, for you to …

The terms recruitment and selection as used in human resource management have been defined differently by several number of scholars according to their level of understanding, and the following are some of their views so far. Human resource recruitment is defined as any practice or activity carried out by the …

Introduction Titration is defined as technique whereby one solution of accurately known concentration also known as the titrant is added slowly into another solution of unknown concentration until a neutralization reaction is reached. There are several types of titration methods in chemistry. Firstly, is the acid-base titration method which was …

In the strong acid-weak base titration, 0. 1 M ammonium hydroxide ( NH4OH ) was titrated with 0. 1 M hydrochloric acid ( HCl ). 2-3 drops of phenolphthalein were added as indicator into the conical flask which contains 25mL of hydrochloric acid. Ammonium hydroxide was then titrated slowly into …

SAFETY IN THE LABORATORY Safety in the laboratory must be emphasized. The compounds you will work with do have some hazards associated with them. Therefore, it is important to follow the safety rules outlined in this lab manual. You should assume that all compounds encountered in the laboratory are toxic …