Mercury
Mercury is a metallic element that is a liquid at room temperature, it is one of the transition elements. Mercury's atomic number is 80. It is superconductive when cooled to within a few degrees of absolute zero. Mercury was once known as liquid silver or quicksilver which was studied by the alchemists. Mercury was first distinguished as an element by the French chemist
Antoine Laurent Lavoisier in his experiment on the composition of air. At room temperature mercury is a shining, moving liquid that has a silvery-white color, and slightly volatile. Mercury remains a liquid over a wide temperature range.
Mercury is a solid when given a pressure of 7640 atmospheres (5.8 million torrs).
It dissolves in nitric or concentrated sulfuric acid but is resistant to alkalies. Mercury melts at -39C, boils at about 357C,and has a gravity of 13.5.
The atomic weight of mercury is 200.59. Mercury comes in its pure form or combined with silver in small amounts. It is mostly found in the form of the sulfide. Mercury has many uses and is a very important element. A major use of mercury is in electrical equipment such as fluorescent lamps, and mercury batteries. Mercury is used in thermometers because the change in volume for each degree of rise or fall in temperature is the same. The use of mercury in the thermometer instead of alcohol was done by Gabriel Daniel Fahrenheit in 1714.
It was also used in vacuum pumps, barometers, and electric rectifiers and switches. Mercury is used in a mercury-vapor lamps which are used as a source of ultraviolet rays in homes and for sterilizing water. Mercury-vapor is also used instead of steam in the boilers of some turbine engines. Mercury is sometimes used for amalgamation. Amalgamation is a metallurgical process that utilizes mercury to dissolve silver or gold to form an amalgam. This process has been largely supplanted by the cyanide process, in which gold or silver is
First, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder. This water was then poured into the styrofoam cup that will be used to gather the hot water later. The water level was then marked using a pen on the inside of the cup. The water was then dumped out, and the cup was dried. Next, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder, and the fish tank thermometer was placed in the water. Once the temperature was stabilizing in the graduated cylinder, the marked styrofoam cup was filled to the mark with hot water. Quickly, the temperature of the regular water was recorded immediately before it was poured into the styrofoam cup. The regular/hot water was mixed for a couple seconds, and the fish tank thermometer was then submerged into the water. After approximately 30 seconds, the temperature of the mixture leveled out, and was recorded. This was repeated three
Conclusion: In support of my hypothesis, it is found that the mystery powder is one of the five known compounds. Through experimenting the chemical reaction in spot plates, it is concluded that the mystery powder is icing sugar. It was fairly straightforward because we just have to see which substances matched the reaction of the mystery powder. All in all, my hypothesis is correct and through researching the interpretation, icing sugar is the mystery substance.
The majority of mercury sett;es into the surface sediment where the amount of mercury was2.5 times more than the deep sediment. This of course leads to an even greater chance of the mercury getting recycled into the food chain rather than decomposing.
orbit is the most circular of any planet, with an eccentricy of less than 1%.
...s can create an environment in which a person may cross the line into a violent or antisocial lifestyle. There are also possibilities that there are biological reasons a person may become a criminal. As in any research you must address and accept all possibilities, and you cannot dismiss one without proof.
- Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.
In conclusion Cleopatra lived a gloriously interesting life and she has the history and Hollywood movies to prove it. Yet even being the femme fatale that she was we may never know if Cleopatra ever did have her heart swell with pride and love for Caesar, Antony or any man. She was a proud woman and believed in her rights as a queen, those rights did not, in her books, include being paraded through Rome, in chains. No one will ever know if she was thinking of love or revenge when she took her life in 30 BC but one can only give her the applause and quiet dignity deserving of a queen.
They also explore the myths about the connection between genetic factors and criminal behavior. The first myth they looked at was “Identifying the Role of Genetics in Criminal Behavior Implies That There Is a “Crime Gene.”” This myth is dismissed because of the unlikelihood that that a single gene is responsible for criminal behavior. The second myth they look at is “Attributing Crime to Genetic Factors is Deterministic.” This myth is also easily dismissed because of the fact that just because someone has a predisposition to a certain behavior doesn’t mean that the person will take on that behavior.
Cleopatra spent most of her teenage years sharing her father’s political struggles. In 51 B.C her father died. When Cleopatra became queen she was only eighteen years old. In order to become queen she needed to have a king beside her. She had to marry her half- brother who was only ten years old. Cleopatra’s education wasn’t a difference because she always needed to stay in the palace so she was home school. Although Cleopatra had a good education. In the 3rd and 2nd centuries major poets and scholars serve as tutor to her. Because Cleopatra was so young when she started, not a lot of good things happen for example many floods, hunger, and low on crops. Cleopatra needed help, so she decided to go to Rome to visit someone. In order for her to not get caught she wrap herself in a carpet and Caesar thought it was a sma...
In today’s society, one will find that there are many different factors that go into the development of a criminal mind, and it is impossible to single out one particular cause of criminal behavior. Criminal behavior often stems from both biological and environmental factors. In many cases criminals share similar physical traits which the general population do not usually have. For example criminals have smaller brains than properly adjusted individuals. However biological reasons cannot solely be the cause of criminal behavior. Therefore, one must look to other sources as to how a criminal mind is developed. Social and environmental factors also are at fault for developing a person to the point at which they are lead to committing a criminal act. Often, someone who has committed a violent crime shows evidence of a poorly developed childhood, or the unsuitable current conditions in which the subject lives. In addition if one studies victimology which is the role that the victim plays in the crime, it is apparent that there are many different causes for criminal behavior. Through the examination of biological factors, in addition to the social and environmental factors which make up a criminal mind, one can conclude that a criminal often is born with traits common to those of criminals, it is the environment that exist around them that brings out the criminal within them to commit indecent acts of crime.
JOSEPH, J (2001), Is crime in the genes: A Critical review of Twins and Adoption Studies of Criminality and Antisocial Behaviour.
Cleopatra VII was eighteen and Ptolemy was only ten when they were named King and Queen of Egypt in 51 B.C. (History). For the most part Cleopatra did most of the ruling. Ptolemy was very naïve to with his advisors. They would tell him what to do. Finally, three years after Cleopatra had ruled they advised him to take total control of the kingdom. He went with his advisors and Cleopatra was forced in exile. Cleopatra fled to Syria where she began to construct an army for her rev...
Spending time in the outdoors and getting in some healthy exercise tend to go hand in hand. From a gentle walk in the woods to canoeing in a lake to hitting the trails in our national or state parks, the great outdoors