What is the percentage of sodium (by mass) in sodium phosphate? (42.1%) 3. For the hydrate sodium sulfate decahydrate‚ calculate the following: (a) the percent of sodium (by mass) in the hydrate (14.3%) (b) percent of TOTAL oxygen (by mass) in the hydrated compound. (69.6%) (c) Percent of water (by mass) in the hydrate (55.9%) 4. Calculate the percentage of nitrogen (by mass) in the ammonium nitride (82.4%) Moles Worksheet 1. How many moles are there
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amount of salinity in the water affect gross primary productivity? Hypothesis: The higher the salinity content in the water the lower the gross primary productivity values. Variables: Control- The group with zero salt added. Dependent- Dissolved oxygen reading. Independent- The salt concentration in the water. Introduction: On the surface waters of lakes and oceans‚ plants are mainly unicellular algae‚ and most consumers are microscopic crustaceans and protozoans. Both the producers and consumers
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chemistry using Priestley’s discovery of oxygen. Priestley founded the method of collecting gases by bubbling through water and collecting in an inverted gas jar by water displacement.
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NAME : SUZANNE YEOH CLASS : 4SC4 (2012) TEACHER : PN. ROZITA DATE : 8.10.2012 INDEX No. | Title | Page | 1 | 9.1 Human Activities that Endanger an Ecosystem - introduction - pollution - strategies to solve problems related to pollution | 3 - 11 | 2 | 9.2 The Greenhouse Effect and the Thinning of the Ozone Layer - The greenhouse effect - The thinning of the ozone layer - Impact of global warming and the
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high oxygen MAP is identified as a potential technology that addresses key shortcomings in traditional modified atmosphere packaging. What are Minimally Processed Fruits and Vegetables? Minimally processed fruit and vegetables can be classified as those fruit and vegetables which have been trimmed‚ peeled or cut into ready to use (RTU) products‚ can be pre-packaged‚ and offer consumers nutrition‚ convenience and
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atmospheric carbon dioxide‚ water and sunlight and converted it into sugar (glucose) and released the waste product oxygen. Photosynthesis reduced the amount of carbon dioxide in the atmosphere‚ as oxygen was continually being released. For roughly a billion years‚ oxygen released by cyanobacteria did not build up in the atmosphere. It was used up by two sources: oceans and rocks. Oxygen dissolved in the oceans and oxidized (rusted) the exposed iron and other minerals‚ as seen in banded rock formations
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Another short term response to physical activity is that your breathing rate and heart rate increases‚ the reason this occurs is because the muscles are being made to work harder and as a result of that the muscles need more oxygen so therefore you need to breathe in more oxygen and breathe out more carbon dioxide to keep the muscles going. Another short term change that occurs due to exercise is that the muscles become more pliable‚ the result in the change is due to the muscles in the body contract
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up as ADP (adenosine diphosphate) and by adding the chemical Phosphocreatine it becomes ATP. Our body can function with or without oxygen. Movements that are short and explosive‚ classed as anaerobic energy production are powered by energy systems which do not need oxygen whereas repetitive movements which require oxygen need an energy system which requires oxygen to function such as the aerobic energy system. Energy is vital to produce muscle contractions. And energy is produced from foods consumed
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Research Question: What is the activation energy (kJ mol-1) of the decomposition of hydrogen peroxide (H2O2) to oxygen (O2) and water (H2O) by catalyzed by catalase‚ by measuring the time taken for 10cm3 of oxygen gas to be evolved (s) at different temperatures (K) of 297.0K‚ 300.0K‚ 303.0K‚ 306.0K and 309.0K? 1: INTRODUCTION When studying the function of catalysts in reactions during the kinetics unit‚ I was eager to know more about the position of enzymes‚ which function as biological catalysts
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MGC 2018 Practical write up Name: Madison Bielby Student number: a1740189 Word Count: TITLE A study using an oxygen electrode to determine the effects of varying light intensity on the rate of photosynthesis of spinach‚ Spinacia oleracea. INTRODUCTION Photosynthesis is a two-stage process‚ each with multiple reactions‚ which must work concurrently with each other in order for plant survival. The first stage of photosynthesis is the light dependent reactions which occur in the thylakoids followed
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