Clare Chong P2 ! ! ! ! ! Chemistry Practical 4: Measuring rate of reaction Aim of experiment: To determine the rate of reaction when the concentration of I2 increases. ! ! ! Chemical equation: 2Fe3+ + 2I- --> 2Fe2+ + I2 ! ! ! Apparatus & materials: Apparatus Quantity 50ml Pipette 1 10ml Pipette 1 Pipette bulb 1 100ml beaker 2 50ml Burette 1 250ml Conical Flask 6 Timer 1 Distilled water 100ml or more 50ml Measuring
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CHE 140 Name__Chesi Spriggs First Hour Exam Potentially useful information 1000 g = 1 kg 1000 mL = 1 L 1 in = 2.54 cm 1 mL = 1 cm3 D = m/v Select the best choice for the following questions. ___e___ 1. A hypothesis is a(n) a. formulation of principles based on facts. b. modification of a theory. c. organized body of knowledge. d. tentative explanation of observations. e. None of the above. __b___ 2. The initial success of the Bohr theory was based
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THE CHEMISTRY OF LIFE (Review 1-7) I. Basic Chemistry A. Elements 1. Definition- an element is a substance composed of a single type of atom 2. Major elements of the human body 3. Trace elements of the body B. Atoms 1. Definition- the atom is the smallest part of an element which cannot be broken down further by ordinary chemical means. Atoms are composed of protons‚ neutrons and electrons. 2. Particles that make up atoms
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Name ( ( Class ( ( Title ( Manufactured Substances in Industry ( |Content |Page | |(A) Sulphuric acid | | |Manufacture of sulphuric acid |1 – 3 | |Properties of sulphuric acid
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Food Chemistry Food Chemistry 95 (2006) 180–185 www.elsevier.com/locate/foodchem Antioxidant activity and hepatoprotective potential of Phyllanthus niruri R. Harish‚ T. Shivanandappa * Department of Food Protectants and Infestation Control‚ Central Food Technological Research Institute‚ Mysore 570 020‚ India Received 5 April 2004; received in revised form 25 November 2004; accepted 25 November 2004 Abstract Antioxidant activity and hepatoprotective potential of Phyllanthus niruri
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Chemistry of cosmetics Few people would whip out a chemistry set‚ uncork the vials‚ and slap the compounds on their face. Yet‚ millions of women and girls essentially do that every day when they unzip their makeup bags and apply lipstick‚ mascara‚ and other makeup. Like the compounds in a chemistry set‚ makeup consists of chemicals. Although the chemicals in cosmetic products are intended to improve the appearance of skin‚ lips‚ and lashes‚ some can cause adverse effects. Emulsions The majority
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Question: What Is the Importance of Chemistry? What is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here’s a look at the importance of chemistry and why you should study it. Answer: Chemistry has a reputation for being a complicated and boring science‚ but for the most part‚ that reputation is undeserved. Fireworks and explosions are based on chemistry‚ so it’s definitely not a boring science
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1 Class XII Chemistry Ch 5: Surface Chemistry Chapter Notes Top Concepts / Key learnings: 1. 2. 3. 4. 5. 6. Adsorption: The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. Adsorbate: The substance which is being adsorbed on the surface of another substance is called adsorbate. Adsorbent: The substance present in bulk‚ on the surface of which adsorption is taking place is called adsorbent. Desorption: The process of removing an
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are living with the families. The key market of the golden empire is the working families who are very busy. Most of the professional busy families come in here or order their ready meal. To target these customers at the moment the golden empire use free delivery. I would suggest that to reach these customers they could use a promotion method such as a website where customers can order online. Another way to encourage customers would to be give discount when they order online. I have chosen this
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The importance of chemistry‚ or any other area of study‚ depends entirely on how relevant it is to some desired outcome. If you wished to create a new type of plastic‚ chemistry would be highly important‚ but if you wished to develop a new music genre‚ chemistry would probably be of no importance at all. It is extremely important. That aspirin or tylenol you may take for a headache was made by chemists‚ as are antibiotics‚ and other prescription meds. Not only are chemists in the drug trade‚ but
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