Astronomy - Dark Matter Essay Example | Topics and Well Written Essays - 1000 words

Astronomy - Dark Matter - Essay Example 23 percent is dark matter, which we cannot observe and is invisible to us and 73 percent is dark energy which is countering the effects of gravity and hence driving the expansion of the universe. The idea of dark matter came after observing the motion of spiral galaxies like our own Milky Way. Motion of the stars in Andromeda Galaxy, which is our nearest, was observed. In case of spiral galaxy, it was expected that the stars at the outer layer or arms of the galaxy would move faster than the ones on the inside to keep up with the shape of the galaxy. The observations, however, were contradicting this notion and readings showed stars at the outside moving with almost the same speed as the inner stars. Since gravity depends on mass of the object, it was calculated that the visible mass of the galaxy was not enough to keep it together. The anomaly in the motion of spiral galaxy suggested that the mass of the galaxy might be more than it seems. We see circular motion all around us in the universe from the motion of our planets around the sun and in a similar way motion of stars around galactic center. Calculations suggested that the visible mass of the galaxy did not have enough gravitational force to overcome the centrifugal force in spiral galaxies and with the mass of visible matter; the galaxies would lose their spiral shape and break away. Since, this is not the case and we see spiral galaxies all around us; there must be invisible matter that seems to have a gravitational effect but does not interact with visible matter. This invisible matter is called dark matter and it has mass which in turn gives it gravitational force. An explanation for this missing mass was given that red dwarfs or remnants of supernovas which are difficult to observe because they are low light sources, could account for this missing mass; but, the idea was soon ruled out because the missing mass discrepancy could not be justified with even dwarf galaxies. Dark matter may not be visible to us, but, there are strong observations pointing towards its existence. Gravitational lensing is an effect which points towards existence of dark matter. As per Einstein’s theory, light bends with the gravitational effect of massive objects. Dark matter does not interact with light, but, because it has mass, light from distant galaxies bend around areas with dark matter. The area of dark matter in between the telescope and the galaxies, act as a giant lens and distorts the image, magnifies some galaxies and even causes circular lines distortions typical with common lenses (Kleingrothaus and Arnowitt 27). It is further observed that galaxies form within clumps of dark matter. Dark matter is thought to be the skeleton aiding in formation of galaxies. It is still not completely understood how the galaxies form, but when computer simulations are run for creation of galaxies with only the visible matter, the result point towards a failed galaxy that could not hold itself togeth er. However, with the inclusion of dark matter or extra mass, the evolution of galaxies as per the computer simulations line up with the images we observe in the universe (Clavin 2). Visible matter joins in the clumps of dark matter and stars initially form because of increased effect of gravity. Over time galaxies evolve from elliptical to circular disks and eventually in their present form that is spiral galaxies. The mystery of dark matter questions

Supply Chain Management and New Product Development Research Paper

Supply Chain Management and New Product Development - Research Paper Example   New product development is that series of events that starts with the conception of the product and its ideation and ends with reaching the product to the end user through strategic brand positioning through the meeting of competitive advantage. New product development is an important part of any and every business today in order to show a portfolio that thrives on enrichment through innovation and new experiences in the market place. It is a concept that will hold the prospective consumer's attention for long enough in order to turn him or her into an actual end user. In a nutshell, through new product development, one renders a quality of improvising and strategic branding to the business and helps reach out to more and more people and turn them into consumers. Therefore, it is an important part of meeting competition and venturing into new markets to increase profitability and brand visibility as well. (Savage, 2007)   According to the above diagram, the importance of new product development lies in the fact that there is a need in today's world of competition to keep redefining the business and its offerings. Most of the companies listed in the table have done just that by adhering to the latest technologies and making sure that their research and development department is on top of things every step of the way. This has also given rise to a particular kind of brand positioning and a pattern that these companies have constantly improved upon. (Ellram et al, 2007)  This model has been presented in the form of a flow chart with the aim of collaborating and organizing the knowledge and information within an organization to zero in on a strategy that makes the best possible use resources. (Hugos, 2005) The best option facing an organization in the context of the above diagram or flow chart is to test its supply management strategy on various suppliers instead of one supplier alone, in order to f ind the strengths and weaknesses of each of the suppliers.  

Tainted Love Composed by Ed Cobb Essay Example | Topics and Well Written Essays - 500 words

Tainted Love Composed by Ed Cobb - Essay Example Tainted Love was composed by Ed Cobb, a songwriter and originally recorded by Gloria Jones, a soul singer, in 1965. However, the song emerged a mainstream hit in 1981 performed by Soft Cell duo, Marc Almond and David Ball as a cover song. Almond and David Ball, the core of the Soft Cell band, left their mark on the generation that lives today. Both Almond and Ball came from Leeds, U.K and had a mundane music career. They had redundant failures, which made their recording company to give them one last chance to make a hit. They utilize this last chance to make the song Tainted Love not feeling sanguine when recording it. Every radio station in the United Kingdom was awash with the song. Soft Cell’s version hit the top of the U.K’s single charts and maneuvered its way to Top 40 in the United States a year later, peaking at position 8. Tainted Love by Soft Cell was synth-driven and danceable. Enriched with Marc Almond’s vocals alternating torched and sleazy, it is agreeable that this was one of the epic songs of its time. They went ahead to set a Guinness World Record for the longest consecutive stay on the U.S Billboard Hot 100 chart. Compared with the original version done by Gloria, Soft Cell’s version portrayed a darker edge. In spite of the fact that the band had it as a cover song for their album, their synth-pop approach made the song sound more original. Soft Cell virtually owned the song. Soft Cell’s Tainted Love is my favorite ballad especially because of the jocular manner in which the singer says he wants to run away because he has endured a lot. The song is indeed heart-rending and makes one feel like true love never exist. Different people can have a varying interpretation of a song. According to me, the song Tainted Love is about unconsummated love.  

Felony Murder Essay Example | Topics and Well Written Essays - 500 words

Felony Murder - Essay Example Felony murder is one of the most critical crimes in the United States. Felonies vary in type and form, but the common denominator is that any death that occurs in the course of crime is treated as felony murder. Crime perpetrators may or may not cause death in the line of crime, determining the extent of felony murder law application. Any person who commits a felony and causes death to another person in the course of that felony is guilty of felony murder according to felony murder law (Binder, 2012). The crime perpetrator is highly likely to be charged and convicted for first degree murder. While felony murder and how this murder is realized remains critical to serving justice, it is important to account for the proportion of people who are caught up in the acts of crime, and then held equally responsible for the murder(s) that occur. It is important to note that every single crime perpetrator found guilty of felony murder should be substantial punished for it. However, this should be controlled and limited to direct participants in criminal activities that result in felony murder. There have been myriad reported cases on conviction of persons who do not even realize that they are in the middle of criminal activities when felony murders take place. In other words, as much as criminals should be held accountable for the deaths of innocent persons, there should be provisions for isolated cases following critical investigations into such matters. This can serve as an effective way to ensure that innocent persons are not incarcerated for felony murders that they can hardly explain. The idea of felony murder law is to protect innocent persons from being hurt or losing their lives at the verge of crime (Binder, 2012). Of course, this is a welcome move for protecting citizens in the event of crime. However, care should be taken in evaluating the conditions under which felony murders occur, in order to safeguard the interests of all persons.

LEADERSHIP CRITIQUE PAPER Essay Example | Topics and Well Written Essays - 750 words

LEADERSHIP CRITIQUE PAPER - Essay Example However, some critics feel that he too, like all other good leaders, suffered from some subtle weaknesses in his style of leadership. He is often charged with the accusation of being too much authoritative while making decisions, sometimes to the extent of imposing his autonomy on his fellow officials. We may take for instance his stop-and-frisk policy which unreasonably targets the Muslim and the black communities. But despite all these criticisms, the public believes that he possessed a kind of innovation and ingenuity never seen before in the NYPD. He resorted to the use of latest technology to strengthen the department’s hold on the crime rates. In 2012, he joined hands with Microsoft to launch a law enforcement technology for the real-time analysis of public safety data to predict latent threats and criminal activities. In 2013, he implemented the use of license plate readers in the traffic lanes which were linked to the domain awareness system to monitor the exit and ent ry points to the city. Some of the articles by his contemporary authors provide a deeper insight into Kelly’s leadership style and his effectiveness as a leader of the NYPD. An article that talks about the recent changes that have seeped into the law enforcement system of the US is â€Å"Policing by Numbers: Big Data and the Fourth Amendment† by Elizabeth E. Joh. The article, as the title suggests, focuses mainly on the use of data and figures in policing against domestic terrorism. For instance, police in Chicago employ a risk analysis of the criminals to ascertain their chances of getting involved in future crimes. In North Carolina, the police have prepared a map of high-risk regions that are more prone to be attacked by criminals. Similarly, in New York, the NYPD has tied up with Microsoft to launch a â€Å"Domain Awareness System that collects and links information from sources like CCTVs, license plate readers, radiation sensors, and

Money Is Not Everything Case Essay Example for Free

Money Is Not Everything Case Essay 1. According to C.S. Lewis there are three things morality is concerned about , what are those things? Explain each one. Morality, then, seems to be concerned with three things. First, with fair play and harmony between individuals. Second, with what might be called tidying up or harmonizing the things inside each individual. Third, with the general purpose of human life as a whole: what man was made for: what course the whole fleet ought to be one: what tune the conductor of the band wants it to play a. Personal – What’s the use of thinking and just drawing up rules if we don’t think that the courage and unselfishness of individuals is ever going to make any system work b. Communal – Kindness and fair play between nation, classes and individuals c. Purpose – the thinking that every individual lives on forever. This means that we are more valuable than anything in the world which will come to an end. 2. What are the 4 Cardinal Virtues? (Give a definition of cardinal and each of the virtues)? Cardinal virtues are virtues which are common to all people, Christian or not. It is derived from a Latin word meaning ‘the hinge of a door’ because they are pivotal d. Prudence – practical common sense; harmless as doves but also as wise as serpents e. Temperance – putting a limit to one’s â€Å"addictions† f. Justice – â€Å"fairness† g. Fortitude – 2 kinds of courage, faces danger and sticks it under pain; guts 3. What does it mean for commitment to be â€Å"elusive?† Breaking a commitment for a â€Å"higher† commitment; Breaking a commitment is considered bad by society; the less you think about your commitment, the deeper it is 4. What is the meaning of the statement â€Å"Commitment is a choice and a promise?† And how does it relate to freedom? Though we have a choice, people allow themselves to be afflicted with the voluntary slavery of indetermination. The promise is a particular kind of choice. Unlike every other choice we make, what is unique about a promise is that it describes something we intend to do in the future, whereas any other choice is a formal determination about the present. By giving my word, I am assuming an obligation, but I do more than that. I yield to another, or others, a claim over myself by creating an expectation in them concerning what I say I will do for them. Since we are given choices, it means that we have freedom. As more choices are given to us, we feel that there is more freedom. Also, choosing a commitment means that you are doing what you want. You would never deliberately choose something that you don’t want. In the end, you will feel more free with your commitment because you are doing something that you like doing. 5. Explain the meaning of conscience having both a subjective and objective aspect. Subjective: It is ours, we are responsible for how we decide Objective: it transcends our individualistic, private notions and â€Å"bind† us, calling us ur of ourselves into relation with others and before God 6. What is the difference of â€Å"fear conscience and philosophical-ethical conscience?† Fear conscience: â€Å"Baka mahuli ako† Philosophical: â€Å"Hindi magandang magnakaw† 7. What are the two axial commitments according to Haughey? Explain at least one of them? (note: you can decide just to give one or two examples for each axial commitment) h. The first is the commitment of God to His Son i. Self-donation as a general description 1. I am not growing this relationship. Should I end it? 2. Is self-donation opposed to freedom? ii. Complete commitment to the other in love is at the heart and core of the internal life of God Himself iii. Commitment is an essential part of existence iv. Commitment generates communion v. Commitment is compatible to freedom (self-donation) i. The other is Jesus’ commitment vi. Commitment is a process (Not a single act) vii. Commitment is motivated by love 3. Love one another as I have loved you viii. Commitment is about communion 4. As the Father has loved me, so have I loved you. Abide in my love ix. Commitment has a clear direction 5. No one comes to the Father except through me x. Commitment involves freedom 6. No one takes it from me, but I lay it down of my own accord 8. What does it mean for Jesus’ commitment to be totally free? j. For this reason, the Father loves me, because I lay down my life that I may take it up again. No one takes it from me, but I lay it down of my own accord. I have authority to lay it down, and I have authority to take it up again. This charge I have received from my Father. 9. What is the meaning of this statement, â€Å"The purity of the commitment means you dont just make it, you yield to it—(freely, gladly made)†? 10. What is the meaning of this statement, â€Å"The commitment that is rooted in mutual presence of oneself and God more likely will be preserved?†

Data Collection Essay Example for Free

Data Collection Essay * The Rough was excluded during the calculation of the mean as the rough was a trial to indicate the general whereabouts of the end point, which is inaccurate of the exact end point. Table 2. Observations collected during the experiment. Table contains observations which were recorded during each trial of the experiment. Trials Observations Before trials * When water was added to the crystals of oxalic acid, it dissolved almost instantly with a light stirring of the beaker. Rough * When two drops phenolphthalein was added to the solution of sodium hydroxide, the solution turned pink. * After adding about 20.8dm3 of oxalic acid into the sodium hydroxide solution, while swirling the conical flask, the solution turned completely clear the oxalic acid was filled up to 21dm3 to have a rounded rough end point to work with. 1 * When two drops of phenolphthalein was added to the sodium hydroxide solution, the solution turned pink. * After adding about 20dm3 of oxalic acid solution, while swirling the conical flask gently, each drop of oxalic acid solution began to turn the pink solution slightly clear. * After about 20.6dm3 oxalic acid solution was added, the pink solution turned completely clear. 2 * Two drops of phenolphthalein was added to sodium hydroxide solution, producing a pink coloured solution. * After about 20dm3 of oxalic acid solution was added, each drop began turning the pink solution slightly clear. * After adding around 20.4dm3 of oxalic acid solution, the pink solution turned completely clear. 3 * Two drops of phenolphthalein was added to the sodium hydroxide solution, turning the solution in the conical flask pink. * After adding about 20dm3 of oxalic acid solution, each drop began turning the pink solution slightly clear. * When about 20.3dm3 of the acid was added, the pink solution turned completely clear. Data Processing 1. Write an equation for the reaction. (COOH)2 + 2NaOH 2NaCO3 + 2H2O 2. What amount (in moles) of NaOH is present in 20.0 cm3 of 0.097 mol dm-3 sodium hydroxide solution? c = n/v c = 0.097mol dm-3 à ¯Ã‚ ¿Ã‚ ½0.001 = 0.097mols à ¯Ã‚ ¿Ã‚ ½ (0.001/0.097 x 100%) = 0.097mols dm-3 à ¯Ã‚ ¿Ã‚ ½1.03% v = 20.0cm3 à ¯Ã‚ ¿Ã‚ ½0.04 = (20.0/1000) à ¯Ã‚ ¿Ã‚ ½ (0.04/20.0 x 100%) = 0.020dm3 à ¯Ã‚ ¿Ã‚ ½0.2% n = ? n = c x v n = 0.097 à ¯Ã‚ ¿Ã‚ ½1.03% x 0.020 à ¯Ã‚ ¿Ã‚ ½0.2% n = 0.00194 à ¯Ã‚ ¿Ã‚ ½ (1.03 + 0.2)% ? n = 0.00194 mols à ¯Ã‚ ¿Ã‚ ½1.23% 3. What amount of oxalic acid was present in the average volume required to react exactly with the sodium hydroxide solution? Using the molar ratio of 1:2 for acid : base respectively: 0.00194 à ¯Ã‚ ¿Ã‚ ½1.23% / 2 = 0.00097 mols ? amount of oxalic acid present = 0.00097 mols à ¯Ã‚ ¿Ã‚ ½1.23% 4. What amount of oxalic acid was present in your 250 cm3 volumetric flask? Concentration of acid in 250mL is the same as the concentration of acid in 1L. Therefore the concentration of acid in 1 dm-3 of acid solution is the same as concentration of acid in 250mL: c = n/v c = 0.0119à ¯Ã‚ ¿Ã‚ ½2.03% / 0.25 à ¯Ã‚ ¿Ã‚ ½(0.15/250 x 100%) c = 0.0476 à ¯Ã‚ ¿Ã‚ ½ (2.03+0.06)% ? c = 0.05 mols dm-3 à ¯Ã‚ ¿Ã‚ ½2.09% (concentration of acid) c = n/v 0.05à ¯Ã‚ ¿Ã‚ ½2.09% = n / 0.25 à ¯Ã‚ ¿Ã‚ ½0.06% 0.05à ¯Ã‚ ¿Ã‚ ½2.09% x 0.25à ¯Ã‚ ¿Ã‚ ½0.06% = n ? n = 0.0125 à ¯Ã‚ ¿Ã‚ ½ (2.09 + 0.06)% ? moles of oxalic acid in 250mL solution = 0.0125 mols à ¯Ã‚ ¿Ã‚ ½2.15% 5. What is the mass of one mole of oxalic acid? n = m/MM MM = m/n MM = 1.5g à ¯Ã‚ ¿Ã‚ ½0.02 / 0.0125mols à ¯Ã‚ ¿Ã‚ ½2.15% MM = 1.5 à ¯Ã‚ ¿Ã‚ ½(0.02/1.5 x100%) / 0.0125à ¯Ã‚ ¿Ã‚ ½2.15% MM = 120 à ¯Ã‚ ¿Ã‚ ½(1.33+2.15)% MM = 120 à ¯Ã‚ ¿Ã‚ ½3.48% m = n x MM m = 1 x 120à ¯Ã‚ ¿Ã‚ ½3.48% ? mass of one mole of oxalic acid = 120g à ¯Ã‚ ¿Ã‚ ½3.48% 6. How many molecules of water of crystallisation are present in one mole? MM of (COOH)2 = 2(12.01 + 32 + 1) = 90.04 MM of H2O = (2.02 + 16) = 18.02 (COOH)2.xH2O = 120g à ¯Ã‚ ¿Ã‚ ½3.48% ? 90.04 + 18.02x = 120g à ¯Ã‚ ¿Ã‚ ½3.48% ? 18.02x = 120g à ¯Ã‚ ¿Ã‚ ½3.48% 90.04 ? 18.02x = 29.96à ¯Ã‚ ¿Ã‚ ½3.48% (/18.02) ? x = 1.6626à ¯Ã‚ ¿Ã‚ ½3.48% ? Molecules of water of crystallisation = 1.66à ¯Ã‚ ¿Ã‚ ½0.06 Conclusion and Evaluation Discussion 1. Estimate the degree of uncertainty in your readings using the balance, the volumetric flask, the pipette and the burette. How accurately can you quote your answer? Balance = à ¯Ã‚ ¿Ã‚ ½0.02g Volumetric flask = à ¯Ã‚ ¿Ã‚ ½0.15mL Pipette = à ¯Ã‚ ¿Ã‚ ½0.04cm3 Burette = à ¯Ã‚ ¿Ã‚ ½0.15cm3 The equipments used were relatively accurate as the uncertainties compared to the collected values are small. 2. Compare your answer with the correct answer and work out the percentage error. Percentage error = [(experimental value actual value) / actual value] x 100% = [(1.6626 à ¯Ã‚ ¿Ã‚ ½3.48% 2) / 2] x 100% = 16.87% à ¯Ã‚ ¿Ã‚ ½1.74% 3. Suggest any other reasons for possible error. Other reasons for possible error include the uncertainty of equipments, human errors and mistakes, possibility of contaminated solutions, air bubbles and transference of solution between equipments. This experiment was conducted to find the ratio of water in hydrate oxalic acid crystals. This included calculations of the theoretical and experimental values for the ratio of water in the hydrate oxalic acid crystals and the percentage errors of values compared. The equation for the reaction between the sodium hydroxide solution (NaOH) and the oxalic acid solution ((COOH)2) was worked out, with the product being a salt (NaCO3) and water (H2O). As the oxalic acid solution is a dibasic acid solution, the reaction ratio with sodium hydroxide is 1:2. The amount of NaOH, in moles, was also calculated by multiplying the concentration of the sodium hydroxide solution and the volume of sodium hydroxide solution used. The equation c = n/v was used to calculate this. The result was 0.00194 moles of NaOH in the sodium hydroxide solution with an uncertainty of à ¯Ã‚ ¿Ã‚ ½1.23%. The amount of oxalic acid presented in the average volume required to react exactly with the sodium hydroxide solution was also calculated; by dividing the moles of NaOH (0.00194à ¯Ã‚ ¿Ã‚ ½1.23%) by 2, based on the 1:2 reaction ratio stated before. The result was 0.00097 moles with an uncertainty of à ¯Ã‚ ¿Ã‚ ½1.23%. The amount of oxalic acid present in 250cm3 was also calculated. The concentration of acid in 250mL is the same as the concentration of acid in 1L, therefore, the concentration of acid in 1dm-3 of the oxalic acid solution is the same concentration as the acid in 250mL. With this understood, the equation c = n/v was used once again. The concentration was first calculated by dividing the moles of NaOH by 0.25dm3. The result (0.05mols dm-3 à ¯Ã‚ ¿Ã‚ ½2.09), was used in further calculations to determine the moles of oxalic acid by multiplying the previous calculated concentration (0.05mols dm-3 à ¯Ã‚ ¿Ã‚ ½2.09) with 0.25dm3, resulting in the moles of oxalic acid in the 250mL solution as 0.0125mols à ¯Ã‚ ¿Ã‚ ½2.15%. This value was used in the calculation of the mass of one mole of oxalic acid. The equation n = m/MM was used in this calculation. The MM (molar mass) was first calculated, dividing the mass of oxalic acid crystals by the moles of oxalic acid (1.5 / 0.0125). The mass (m = n x MM) was calculated with the result of this (1 x 120à ¯Ã‚ ¿Ã‚ ½3.48%), resulting in the mass of one mole of oxalic acid being 120à ¯Ã‚ ¿Ã‚ ½3.48%. Finally, the molecules of water of crystallisation presented in one mole were calculated. This was done by using the mass of one mole of oxalic acid (120à ¯Ã‚ ¿Ã‚ ½3.48%), subtracting the MM of (COOH)2 (90.04) from it and dividing the result by MM of H2O (18.02). The final result of the number of molecules of water in crystallisation equalled 1.66 with an uncertainty of à ¯Ã‚ ¿Ã‚ ½3.48% or 0.06. With this final result, the percentage error was calculated, being 16.87%à ¯Ã‚ ¿Ã‚ ½1.74%. All the uncertainties within the values used were calculated into percentage through dividing the uncertainty by the value and multiplying it by 100%. The uncertainties were converted into percentages before doing calculations were done. There were several limitations found during this experiment which would have been the cause of an inaccurate final result the variation between the theoretical value of 2 and the experimental value of 1.66à ¯Ã‚ ¿Ã‚ ½0.06. These limitations include the uncertainties of the equipment, human errors and mistakes, possibility of contaminated solutions, air bubbles found in solutions and the transference of solution between equipments. The significance of these errors and the improvements are listed in the table below. Limitations Significance Improvements Uncertainty of equipments Uncertainties were obtained during the experiment through the use of equipments. The inaccurate recording of data would have affected the results in the end. Eg. The readings on the electronic scale werent fully stable and consistent at one value, it varied increasing and decreasing slightly. In the case of the electronic scale, it was suggested that the variation in weight value was due to the air-conditioning blowing down on it. The air-conditioner could be turned off to reduce the uncertainties and variations. Students could also prevent themselves from breathing heavily down onto the scale while measuring, this could have contributed to the variation as well. Human errors and mistakes Mistakes could affect the outcome and accuracy of results. Eg. While adding water into the volumetric flask to dissolve the oxalic acid crystals, a student accidentally added a little too much, over the 250cm3 that was intended. This would have over diluted the oxalic acid. This could have been avoided through patience while adding the water into the volumetric flask. This could also have been done slowly and carefully, probably using a pipette towards the end at the 250cm3 mark. Reading the measurement of the pipette, burette and volumetric flask could have been inaccurate, causing results to be inaccurate and in turn affecting the calculations. Inaccuracy could have been due to improper way of reading the measurement. Students should have bent down slightly with the measurement at eye level. Student`s heads should not be tilted but level with the equipment as well. The measurement should also be read at the parallax, not above or below it. Possibility of contaminated solutions The experiment was conducted with the use of several different solutions. These solutions could have accidentally been mixed in with each other, causing the solution to be contaminated. The results obtained due to this could have been inaccurate, affecting the final results. Being careful with the solutions used would help avoid this. Using clean equipments for each different solution, making sure the solutions that are not meant to be placed together do not get mixed with each other. After the use of some of the equipments, they were to be washed and reused for another solution. The equipments were not dried before being used again; this could have diluted the solution and contaminated it. Drying the equipment each time after it is washed/cleaned would prevent access water and dilution of solutions. Air bubbles When transferring the dissolved oxalic acid into the burette, there were some tiny air bubbles. This would have because the measurement to be inaccurate as the air bubbles would have caused the reading of the solution to be greater than it actually is. Over time when the bubbles removed itself from the solution which would have caused a decrease in solution. The inaccurate measurement reading would have affected the final results of the experiment. The burette could have been left alone for awhile to allow the bubbles to float to the top. Whatever the amount the bubbles made up for, fill the burette up again with the use of a pipette. Transference of solution between equipments When transferring solutions between two or more differing equipments would have caused an increase of decrease in measurement. An inaccurate amount of solution would have affected the results or recorded data. When using a funnel during the transference of solution into the burette, it caused some increase in the desired amount. This is due to the tip of the funnel having some drops of solution left in it and when the funnel was removed, the movement could have caused those drops to drop into the burette, causing an increase in amount of solution. This could be prevented by either slowly removing the funnel or using the funnel up to a certain mark, remove it and fill up to the desired amount with the use of a small pipette drop by drop. When using the 20mL pipette to transfer the sodium hydroxide into the conical flask, the tip of the nozzle had a drop that was tempted to drop out of the pipette. Avoid touching the sides and move the pipette over the flask slowly would reduce the chances of it dripping out and altering the volume of solution. A small amount of the solution was also stuck at the tip of the nozzle after being emptied. By touching the tip to the side of the flask would help that tiny bit of solution flow out. If possible have the nozzle flat on the side of the flask, this would allow it to flow out smoothly. To avoid or reduce these significant errors, these solutions and improvements should be taken into consideration during future repetition of this experiment. The experiment overall was invalid. Though the values in data collection may have been to a 0.10cm3 difference, the final calculation of the percentage error, 16.87%à ¯Ã‚ ¿Ã‚ ½1.74%, was much greater than the desired 1% causing the experiment to be invalid.