... Roderick R. Jr., Elguira, Cedric Tristan D. Enriquez, Joanne B., Gabat, John Elliot Group 5, 2D Medical Technology, Faculty of Pharmacy, UST ABSTRACT Sublimation is a change directly from the solid to the gaseous state without becoming liquid. In this experiment, we used the process of sublimation to purify the impure benzoic acid. We obtained from 5.00 g to 2.30 g of the sublimate compound. After we purify the acid we collected the pure and sublimate benzoic acid into two different capillary tubes. The two was then subjected to melting point through oil bath. Melting point is the temperature at which a given solid will melt. The oil bath was preferred because it is able to measure temperature even higher than 100 °C and are highly recommendable for compounds which have higher boiling points. As it was seen in the results, the sublimate had an initial temperature of 118 °C and stopped melting at 123 °C while the pure benzoic acid started from the initial temperature of 115 °C and stopped melting at 120 °C. This indicated that the pure benzoic acid has a higher vapour pressure than sublimate. The percentage recovery was computed and had a low percentage of 46%. INTRODUCTION Sublimation is a technique used to purify solid mixtures. [1] We used this process to purify the compound of impure benzoic acid. The impurities in the benzoic acid have amino compounds that are present in a larger extent and must be removed because of phenyl and benzyl compounds that seriously...
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...------------------------------------------------- Artist Statement Making art is to me a never ending search mixed with a passion and a certain craving for creation. My passion for life, my search and craving collides between what I do now and what I do in my art. I’m sorta writing my biography with pictures. Louise Bourgeois says: "The whole art mechanism is the result of many privileges, and it was a privilege to be part of it… The privilege was the access to the unconscious. It is a fantastic privilege to have access to the unconscious. I had to be worthy of this privilege, and to exercise it. It was a privilege also to be able to sublimate. A lot of people cannot sublimate. They have no access to their unconscious" There is something very special in being able to sublimate your unconscious, and something very painful in the access to it..." End of quote. I believe the attraction to the objectively esthetic and beautiful is the basest of human attributes, tying us all together across otherwise arbitrary boundaries of ethnicity, culture, religion and taste. A universal truth if you will, that joins once estranged minds in a sense of unity. I like what William Blake says: A work of art consists of bodies, and is itself a body. “Body” doesn’t mean “figure”, but individuality and character. A living body is the unit it is, as every individuality is. Actually I really don’t wanna say too much about it; Art itself shows what it’s all...
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...Elijah cadena Feb 11, 2013 SOC 400 Short Paper #1 Freud's most continuing and principal idea was that the human psyche has more than one aspect. He affirms that the psyche is structured into three parts, the id, the ego, and the superego. These are the mechanisms through which self develops. The Id is the unconscious self and the source of our libidinal drive. It is what gives us hunger and appetite. The id is not socially constructed. The id is an amoral agency that is expressed in Eros and Thanatos, the life and death drives. The Id also gives us that strong emotional feeling like fear, anger and desire. It is a bundle of drives that derive at birth. The id is uncensored, not capable of waiting for gratification, quite selfish, and even violent. It can be a great source of creativity, but it needs to be controlled. Which is exactly what the ego does. The ego, Freud says is the conscious self. More broadly, the thoughts and behaviors of the self that can potentially be conscious. The ego responds to social pressures and standards such as mores, or the customs of a society. The ego is socially constructed, and as it grows in strength it gets better at impulse control, it makes us responsible, inhibits bad behavior, and plans for the future with a realistic eye for possibilities. Everyone needs a strong ego; it is what makes decisions for you. The superego is our conscience. It is like having an internalized parental representative in your head. This stage is what makes you...
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...2 test. Write your answers to each question on a separate sheet of paper. Chapter 2 – Activity 1 1. What is a pure substance? 2. Explain the difference between an element and a compound. 3. How can a mixture of salt, sand, and iron filings be separated? 4. What kind of separation is needed to change a compound into its elements? 5. What do the subscripts mean in a chemical formula? Chapter 2 – Activity 2 6. Explain what happens to the energy of particles as a substance is heated form a solid to a liquid to a gas. 7. Explain what happens to the temperature of particles as a substance is heated from solid to liquid to gas. 8. What happens to the volume of a gas as it is heated? 9. Explain why dry ice sublimates at room temperature. What is the identity of the white vapor that is observed? 10. Draw a heating curve for water and label the following: solid, liquid, gas (vapor), melting, freezing, vaporization, condensation. 11. Explain sublimation and deposition. Chapter 2 – Activity 3 12. What is a solution? Name at least 3 properties of a solution. 13. What is a suspension? Name at least 3 properties of a solution. 14. What is a colloid? Name at least 3 properties of a solution. 15. How can a suspension be separated? 16. Give an example of a solution, a suspension, and a colloid. 17. What is the Tyndall Effect? 18. Explain why the Tyndall Effect occurs in colloids but not in solutions or suspensions. Chapter 2 –...
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...THE POWER OF CULTURE TO CREATE A BETTER FUTURE Culture is a word, etymologically, driven from the Latin language from the word ‘cultura’ meaning to cultivate. This connotes growing of personality. This entails forming the seed of an individual’s character and life into societal structure. By cultivation, one is schooled in the beliefs and practical attitudes of a particular group of people who own the culture. However, the word culture is most commonly used in three basic senses: excellence of taste in fine arts and humanities; an integrated pattern of human knowledge, belief, and behaviour that depends upon the capacity for symbolic thought and social learning; shared attitudes, values, and goals. Culture has been defined as the totality of way of life evolved by a people in their attempts to meet the challenges of living in their environment, which gives order and meaning to their social, political, economic, and religious norms and modes of organization, thus distinguishing a people from their neighbours. The understanding of personhood, one’s immanent metaphysics and the idea of phenomenal inquiry into the existence generally is rooted in culture. Culture explains, a great deal, the reason why one acts the way one does. Culture shapes man. It makes man read into his environment as to understand what exactly informs a people’s life style and how the people’s worldview cuts into their life world(by analysis of their existential structure). The explanation of culture opens...
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...like hydro power plant,nuclear power plant ,gas turbinre plant combined cycle power plant, solar power plant, wind power plant, tidal power plant, diesel generator, petrol generator, this all are power plant run by fuel and generate electricity. i am introducing new type and technology power plant MERCURY: It's the only common metal which is liquid at ordinary temperatures. Mercury is sometimes called quicksilver. It is a heavy, silvery-white liquid metal. It is a rather poor conductor of heat if compared with other metals but it is a fair conductor of electricity. It alloys easily with many metals, such as gold, silver, and tin. These alloys are called amalgams. The most important mercury salts are mercuric chloride HgCl2 (corrosive sublimate - a violent poison), mercuric chloride Hg2Cl2 (calomel, still used in medicine occasionally), mercury fulminate (Hg (ONC) 2, a detonator used in explosives) and mercuric supplied (Has, vermillion, a high-grade paint pigment). APPLICATIONS: Mercury metal has many uses. Because of its high density it is used in barometers and manometers. It is extensively used in thermometers, thanks to its high rate of thermal expansion that is fairly constant over a wide temperature range. Its ease in amalgamating...
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...* Question 1 Needs Grading | | | What is the helium fusion reaction, and why does it require much higher temperatures than hydrogen fusion? | | | | | Selected Answer: | Helium fusion reaction is the transformation of 3 Helium nuclei into one carbon nucleus. It requires much higher temperatures than hydrogen fusion because it has a greater positive charge (two protons), which requires a strong force to deal with electromagnetic repulsion. | Correct Answer: | The helium fusion reaction is the "triple alpha process". In this process three helium-4 nuclei (the alphas) are converted into one carbon-12 nucleus.The triple alpha process requires higher temperatures than proton fusion because the Coulomb barrier is larger. | | | | | * Question 2 Needs Grading | | | What happens to a low-mass star after it exhausts its core helium? | | | | | Selected Answer: | The low-mass star dies after exhausting its core helium. | Correct Answer: | The process of fusing helium creates carbon. Eventually the core will run out of helium, leaving an inert carbon core surrounded by a helium fusing shell (still surrounded by a hydrogen fusing shell). Both shells will contract, creating higher temperatures forcing the star to expand to a double shell-burning giant. The double shell burning will last a few million years or less. The star will never again achieve equilibrium like it had on the main sequence. Instead the star will undergo thermal pulses where the...
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...On 13 October in 2011, a 2-year-old girl named Xiao Yue Yue was run over by two vehicles in an alley of Busan, Guangdong Province, and both of the drivers fled. After the accident, there were 18 passers-by but none of them gave a hand to save her. Until a scavenger named Chen Xian Mei passed by, Xiao-Yue Yue was rescued and finally sent to the General Hospital of Guangzhou Military Command. Unfortunately, she finally passed away in a few days. After the incident, the social media and the general public blamed heavily the drivers and those 18 passers-by with “cold-blooded”, and criticize the current “moral standard” of the Chinese. We started to question: Is there anything wrong with the "moral standard" of Chinese people now? To begin with, Morality refers to the codes of conduct put forward by a society which used to judge whether or not a person's behavior is justified with the guidelines. It acts as a scale to evaluate and regulate people's behavior towards the social norm. In this Xiao Yue Yue incident, as the society as a whole criticize the drivers and those 18 passers-by, it is clear that we all have a common ‘moral standard’ in our mind that indicate what should be done and what shouldn't be. It is no question that we are told to follow this ‘moral standard’ setting by the society and perform the corresponding behaviors, but why did those 18 passers-by act in an exact opposite way? In fact, nowadays, it is very risk to give help to any strangers on the street in China...
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...Stevens February 9, 2015 Hydrological Cycle What is the water cycle? “The water cycle describes the existence and movement of water on, in, and above the Earth. Earth’s water is always in movement and is always changing states, from liquid to vapor to ice and back again. The water cycle has been working for billions of years and all life on Earth depends on it continuing to work; the Earth would be a pretty stale place without it” (USGS). The water cycle does not have a starting point, but since most of Earth’s water comes from the oceans where it will begin. “The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air; a relatively smaller amount of moisture is added as ice and snow sublimate directly from the solid state into vapor. Rising air currents take the vapor up into the atmosphere, along with water from evapotranspiration, which is water transpired from plants and evaporated from the soil. The vapor rises into the air where cooler temperatures cause it to condense into clouds. Air currents move clouds around the globe, and cloud particles collide, grow, and fall out of the sky as precipitation. Some precipitation falls as snow and can accumulate as ice caps and glaciers, which can store frozen water for thousands of years. Snowpacks in warmer climates often thaw and melt when spring arrives, and the melted water flows overland as snowmelt. Most precipitation falls back into the oceans or onto land, where, due to gravity...
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...Intra-and Interpersonal Competencies Written Assignment The main character in the case study, Sammy, showed inability in inter- and intrapersonal communication. He is facing various daily life problems including defining his self-value and identity, getting along with parents and managing personal emotions. The first problem is that Sammy failed to develop self concept (i.e. Who he is, what he wants to do) but blindly follows his parents’ opinion to persuade further study in college. Based on Identity Statuses Theory, Sammy is experiencing identity diffusion (Marcia,1966) in which he failed to attain commitment (occupational belief) and crisis (actively exploring and making conscious decision to understand his own identity). Besides, he has low self-esteem (i.e. the value he placed on himself) as he consider his classmates are more competent in both sports and academic performance than he does. He feels inferior at school. In order to overcome Sammy’s identity crisis, he should try to explore his own identity by constantly questioning himself about his own value, beliefs and academic pursuit to clarify his occupational and social roles. He can join various extra-curricular activities such as sports and music to discover his inborn talent. He might not be good at sports but he might be good at music or arts and crafts. To boost self-esteem, he needs to gain approval from peers to develop sense of belongingness. He could join more class activities and be generous (e.g. share...
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...The Sexual Revolution. The "sexual revolution" of the 1960’s has been stopped dead in its tracks by the AIDS epidemic. The danger of contracting AIDS is so real now that it has massively affected the behavior of both gay and straight folks who formerly had elected to lead an active sexual life that included numerous new sexual contacts. The safest option regarding AIDS and sex is total abstinence from all sexual contact. For those who prefer to indulge in sexual contact, this is often far too great a sacrifice. But it IS an option to be considered. For those who wish to have sexual contact with folks on a relatively casual basis, there have been devised rules for "safe sex". These rules are very strict, and will be found quite objectionable by most of us who have previously enjoyed unrestricted sex. But to violate these rules is to risk unusually horrible death. Once one gets used to them the rule for "safe sex" do allow for quite acceptable sexual enjoyment in most cases. Note that even when one is conscientiously following the recommendations for safe sex, accidents can happen. Condoms can break. One may have small cuts or tears in ones’ skin that one is unaware of. Thus, following rules for "safe sex" does NOT guarantee that one will not get AIDS. It does, however, greatly reduce the chances. There are many examples of sexually active couples where one member has AIDS disease and the other remains seronegative even after many months of safe sex with the diseased person. It...
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...into very specific directions, and his contributions extend into the field of neuroscience, as well. By exploring the underlying motivations of our behaviors, Freud pioneered new levels of abstraction in human thought. For Freud, the mind is best conceptualized in two distinct components, the conscious and unconscious. The unconscious portion contains the thoughts we may potentially have, as well as the desires which dictate our behavior without our awareness. Societal regulations force us to repress certain aspects of ourselves, and the unconscious serves as the storehouse for this collection. Many of our inner urges are too disturbing for the conscious mind and society at large to cope with immediately. Therefore, we sublimate these secrets into a region we cannot face directly. The ego is responsible for repressing unconscious thoughts. Things that are too disturbing to face immediately are pushed out of awareness by the ego. However, the unconscious continues to exert influence on the behavior of the individual. This psychological pressure creates a continuous battle between the ego and unconscious portions of the psyche. The dynamics of this struggle are the target of much of Freud's psychoanalytic theories. He described the mind as composed of various components. Each component is responsible for one of the various functions the mind executes”. The Boeree (1997, 2006 ) website Jung's theory divides the psyche into three parts. The first...
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...Written Assignment 1: Intermolecular Forces and Liquids and Solids Answer all assigned questions and problems, and show all work. 1. Explain and give an example for each type of intermolecular force. A: a. Dipole-dipole interaction: a dipole-dipole interaction is the electrostatic attraction between the positive end of one polar molecule and the negative end of the other. Dipole-dipole attraction occurs between molecules which are permanent dipoles (polar covalent molecules). An example of a dipole-dipole interaction is HCl and HCl. b. Dipole-induced dipole interaction: a dipole-induced dipole interaction is produced in neutral molecules when they are introduced into a magnetic field (i.e induced by an electric current or by a permanent dipole). Subjecting a neutral molecule to such magnetic fields has effects on the charge of the molecule. The negative charges concentrate in a specific point totally opposite from the positive charges. An example of dipole-induced dipole interaction is HCl and H2 c. Ion-dipole interaction: an ion-dipole interaction is the force between an ion and a neutral polar molecule which possess a dipole moment. Polar molecules are dipoles; they have a positive end and a negative end. The positive ions are attracted to the negative end of a dipole, while negative ions are attracted to the positive end. An example of ion-dipole interaction is K+ ---H2O d. Dispersion forces (London forces): London forces are weak intermolecular...
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...Imagine this scenario set in the future. We know that a decently large rogue planet will be crashing into Earth in a certain number of years and we cannot do anything to stop this from happening. However, we do have the ability to terraform a planet. If we could also move humanity to either Mars or Venus, which one should we go for and why? Hi Jessica! Interesting question. To start off, I will define what terraforming is for those who do not know what it means. Terraforming refers to the hypothetical process of modifying a planet or other heavenly body in order to make it habitable by humans. This outcome can be achieved by changing the atmosphere’s competition, the body’s temperature, the surface topography or the planet’s ecology. In order for terraforming to be successful and the planet to be able to sustain life, NASA has defined that such a body must have extended regions of liquid water, favourable living conditions and enough energy sources to sustain metabolism (). Mars is generally understood to be the planet that is closest to fulfilling these criteria because in many respects it is the most Earth-like planet in the Solar System(). It is generally accepted by scientists that Mars once had an Earth-like characteristic including a thicker atmosphere and abundant sources of water. These characteristics have diminished over the course of hundreds of millions of years due to carbon dioxide/carbonates reactions, a lack of magnetosphere and numerous asteroid impacts. The...
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...time. Calixta may have been unconsciously unaware of her erotic cravings. Still, Calixta, “felt very warm and often stopped to mop her face on which perspiration gathered...”(Chopin). Kate Chopin purposely places together these two occurrences and adds that Calixta unfastened her blouse and closed the windows. The growing storm is a metaphor of Calixta’s budding fervor, proposing that Calixta is about to manifest her physical desires. This brief description early in the story allows the reader to anticipate what is to come next and establishes a sensuality that is easily detected. The metaphor of the storm is elaborated throughout the entire story with the crashing of thunder symbolizing the peak of Calixta and Alcee’s desire. Chopin sublimates the passion the two have for each other by describing the nervousness they feel. Chopin writes, she [Calixta] went and stood at the window with a generally disturbed look on her face... Alcee got up and joined her”(n.pag). Chopin clearly makes it aware of Calixta and Alcee’s struggle of swelling desires and weaken constraints. A bolt of lightning interrupts the tension and causes the pair's first embrace as they finally kiss. The lightning and thundering increases but, “they do not heed the crashing torrents, and the roar of the element made her laugh as she lay in his arms” (Chopin). Chopin describes Calixta as sexual pleased from her encounter with Alcee. The parallel of the storm and the passionate sex between the pair proves...
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