| | 1 | 0.2123 | 0.00 | 42.34 | 42.34 | 2 | 0.2195 | 0.00 | 47.24 | 47.24 | 3 | 0.2049 | 0.00 | 26.65 | 46.65 | After Boiling | 1 | | 31.52 | 32.22 | 0.70 | 2 | | 29.34 | 30.61 | 1.27 | 3 | | 30.61 | 31.52 | 0.91 | Week 2: Determination of Sodium Carbonate in the unknown via titrating using bromocresol indicator Sample number: SC 8 Table 2: Titration of the unknown using hydrochloric acid Trial | Mass of unknown (g) | Burette reading (before boiling) | Final Volume
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Experiment 5 Gravimetric Determination of Sulfate Eisman E. Morales TA: Jackeline Pennywiit Chemistry 121 02/14/2011 Purpose: To determine the percent sulfate in a sample using a semimicro scale gravimetric procedure. Procedure: Refer to pages 41-42 of General Chemistry volume 1 Laboratory Experiments by Judith Casey and Robert Tatz‚ Hayden McNeil Publishing‚ 2010 Report Sheet See attached report sheet. Report Questions 1. Explain how your calculated value for percent
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PRACTICAL 15: DETERMINATION OF HEAT OF NEUTRALIZATION Data collection: |Reaction |Initial Temperature/°C (±0.25) |Final Temperature of Mixture/°C (±0.25) | | |Acid |Base | | |HNO3 + NaOH |28.00 |28.25 |34.50 | |HNO3 + KOH |28.25 |28.25 |34.00
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Chuan Phan Mrs. Pokalo Brit Literature May 1‚ 2013 Hard Times Hard Times is the tenth novel‚ which wrote by Dickens. The novel described the English society and highlighting of the social and economic pressures during 1850s. It is appraise about injustice and lack of concern for others in England during the revolution of industrial. Industrial brought so many good things for people in the Coketown. Many factories built‚ people start to get some jobs. However‚ the process of industrialism
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Linn Bailey once said‚ “If you have discipline‚ drive and determination nothing is impossible.” If you put your mind to anything‚ and have confidence you can accomplish things. When you let the hard times get to you it will bring your confidence down. Determination will help you get through the hard times even if you don’t think you can overcome them. In the book No Safe Place‚ the author uses conflict to develop the theme; Determination is key‚ even if you are doing it all by yourself. For example
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Presentation Topics 2013 Select any 2 topics from the following and present it to the panel for 3-5 minutes each 1. Academic dishonesty : The first step in corruption 2. Academic pressure: Too much to handle 3. Are ‘Peace’ and ‘nonviolence’ outdated concepts? 4. Globalization versus Nationalism 5. Balance between professionalism and family. 6. Can Airlines hold passengers to ransom? 7. Commercialization of Healthcare sector – your views 8. Communities should be empowered to manage their water
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Melting pointe determination #01 Introduction: Objective To learn how to obtain an accurate melting point using a MELTING POINT APPARATUS‚ then use them to draw eutectic curve and determine the eutectic point. Melting point of a solid is the temperature at which the solid and its liquid form are in equilibrium‚ i.e.‚ molecules move back and forth between the two states at the same rate‚ so both phases remain present. If the temperature of a solid is measured carefully as the solid is heated
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1. What was Earth like in its infancy? How does it compare with the Earth today? In the very beginning of earth’s history‚ this planet was a giant‚ red hot‚ roiling‚ boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth‚ it began to cool‚ forming a thin crust on its surface. As the cooling continued
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once loved‚ leaving me bored‚ alone‚ and envious of friends that had full schedules and seemingly endless passions to discuss. That was when I realized that I had never quit for the right reasons. I quit because it was too hard. I quit because I was lazy and unwilling to work for success. This haunted me for the rest of the year. I had thought of myself as successful‚ but I had failed time and time again without acknowledging my
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Introduction: In this lab a total of six titrations are to be performed. Three of them will be done using a known Ca2+ solution‚ (1.000 g CaCO3 /L solution) and three of them will be done using an unknown solution obtained from the stock room. The objective of this lab is to determine the hardness of water‚ using the data collected from each titration performed with the unknown sample. Since the hardness of water arises from the presence of metal ions‚ we can use disodium salt of EDTA and the
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