Report Measuring Reaction Rate using Volume of Gas Produced By John Doe 23th October 2012 Introduction An essential element of chemistry is finding reaction rates. This is because chemists need to know how long a reaction should take. In addition to needing to know the rate of a reaction at any point in time to monitor how the reaction is proceeding. Many factors effect reaction rates‚ two shown above include temperature and concentration. Concentration affects the rate of reactions because
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for each question where applicable‚ and can be used to gauge how hard a given question is in comparison to similar types of questions typically found on the ASTB. Difficulty ratings range from ‘Very Easy’ to ‘Very Difficult.’ All answers are provided at the end of the practice test. Directions: Each question consists of a problem followed by four possible answer choices. For each question‚ determine the answer choice that best answers the question. 1. Difficult 2 2 [( 4 6 0 )(5 30 )] = | 6 |
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through agriculture. Throughout the years‚ a lot of fertilizers were improvised‚ mostly for the comfort of the Filipino farmers. Human urine‚ for example‚ is a well-balanced nitrogen-rich quick-reacting liquid fertilizer. It contains nitrogen‚ potassium and phosphorus and other nutrients depending on the diet. The health risks associated with use of human urine in plant production are generally low‚ that is why it’s an adequate plant fertilizer. On another note‚ Indian tree (Polyalthia longifolia)
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Kitchen risks and how it can be reduced The kitchen is a very dangerous place when hazards are recognized‚ also care workers must make sure they keep children out of the kitchen in case they harm themselves. Cookers are very dangerous especially when they left turned on. Cookers must always be turned off when not in use. Cooking pans when in use should have their handles turned inwards- not outwards as a child could pull the handle and burn themselves with boiling
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Reduced Homework Shouldn’t the district or teachers assign students less homework? We should have less homework because some students have activities outside of school‚ they don’t have time to spend with their family anymore‚ and it may affect their physical health. There should be a sufficient of homework so that students will not have to have a lot of stress. First of all‚ the reason why teachers should give less homework is because like I said‚ some students have activities outside of school
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Table of results Surface area to volume ratio Time taken for HCL acid to diffuse (seconds) 14 38 9 90 7.3 139 6.5 178 6 185 3. Do your results support your hypothesis‚ use date from your table and graph to support your answer‚ you should also identify any anomalous results. My hypothesis was ‘as the surface-area-to-volume ratio decreases the diffusion rate increases’ my results support my hypothesis‚ because in my table of results when the surface area to volume ratio is at 14 the diffusion
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Truly Lokot English Composition II Dr. Elizabeth S 12 2 2014 TV:Could you be with or without it? Television or TV has been considering people’s favorite technology that helps in a way of communication. Television brings quality of pictures and sounds in every home viewer around the world. Also‚ television might be seen almost everywhere like in the mall‚ hospital‚ school‚ and other places. Besides‚ the name television comes from Greek word tele meaning far‚ and the word videre‚ meaning to
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How will you measure your life? 1. How can I be sure that I’ll be happy in my career? Some people assert that money is the most powerful motivator in their lives‚ and the more money they earn‚ the more happiness they will have. However‚ from my personal perspective‚ I believe that getting more opportunity to learn what I am not familiar with‚ taking responsible for my behavior‚ contributing to others in need in the society‚ and trying my best to achieve my goals in my career are the most
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In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. What is Photosynthesis? Photosynthesis is how plants get their food. The reason why plants have leaves‚ roots or being green is all linked to photosynthesis. In photosynthesis‚ a plant takes carbon dioxide from the air and water from the soil and uses the light from sunlight to turn them into food. Photosynthesis occurs only in the presence of light‚ and takes place in the chloroplasts
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Question… Using a country of your choice as an example‚ demonstrate how the government seeks to compensate for market failures. Name: Alex Dagnall Word count: 2382 Seminar tutor name: Lawrence Green. Group Number: 5Q4Z0008/9/Tutorial/A/09 In my essay I am going to talk about the way in which the UK government deals with market failures and the several approaches they can and have taken with the aim of preventing certain aspects of market failure from re-occurring. I will be particularly
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