Experiment to determine absolute zero using Charles’s law In this experiment you will be determining the specific heat capacity of oil using an electrical method. You will need to ensure that your write up contains the following: • Clear method (bullet points are ok) and labelled diagram include what is to be repeated and averaged. • State independent/dependent and control variable(s) • State what is to be varied and how (include range and intervals)? • What is to be measured and what with
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The importance of water in Biological Systems Much of the Earths surface is comprised of water‚ as well as much of biological systems; for instance‚ the human body consists of approximately 70% of water‚ and in other biological organisms this figure could even be 95%. This largely relies on the bonding of water‚ whereby two hydrogen atoms bond to one oxygen atom; hydrogen bonding is the strongest intermolecular force due to its high polarity. Hence‚ what is the biological importance of water?
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of cashew nut before burning: 0.55 g ● After burning: 0.05 g ● Temp. increase of 200 g of water: 7.0 oC 1. Calculate the total energy released by the combustion of the cashew nut by using the water temp. increase‚ the mass of the water and specific heat capacity of water. 14.179j 2. Calculate the energy released per gram of cashew nut consumed in the
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detergents by capillary rise method. 2. To study the effect of temperature on surface tension of liquids. 3. To study the factors affecting the rate of loss of heat of a liquid. 4. To study the breaking stress of different materials of varying diameter. 5. To study the Inter conversion of potential and kinetic energy. 6. To determine the specific heat capacity of liquids. 7. To study the factors affecting the range and height of a projectile. 8. To study the factors affecting the coefficient of friction
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dollars? A) $63.54 B) $16.79 C) $4.44 Your car needs 12.00 gallons. How much will your D) $67.15 5) Determine the final temperature of a gold nugget (mass = 376 g) that starts at 398 K and loses 4.85 kJ of heat to a snowbank when it is lost. The specific heat capacity of gold is 0.128 J/g°C. A) 398 K B) 133 K C) 377 K D) 187 K E) 297 K 6) Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the following masses and natural abundances:
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Title: To investigative the Energy Content of Different Foods. Identifying the problem: The energy content of a food sample‚ of known mass‚ was investigated by using a single calorimeter and the word equation below: Heat energy (J) = Mass (g) x Specific heat capacity of water (4.25/g°C for water) x Change in temperature (°C). Dividing the resulting energy value by grams of food burned gives the energy content (in J/g). I predict that that the Brazil nuts will have the highest
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Science Chemistry Controlled Assessment- Part 3 Analysis and Evaluation 1) Process the data you have collected and plot a graph(s) of the results of your expected results Please refer to the graph attached to the document for the answer to this question. 2) Describe any patterns or trends in your results. Comment on any unexpected results. Due to the positive correlation that my graph shows‚ I can infer that the more mass of CaCl2 added then the higher the energy release. Through further calculations
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Ocean County College Department of Chemistry [Caloric Content of Food] Submitted by Jamie Kaiser Date Submitted: 10/2/12 Date Performed: 10/2/12 Lab Section: Chem-180 Course Instructor: Bassa Purpose The purpose of the experiment was to take foods
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brick is able to store and absorb heat. With this property‚ heat lost is able to be prevented during night time and maintaining thermal comfort of interior during day time. In addition‚ bricks also consist of the characteristics of acoustic isolation. As bricks has greater density‚ thus it is able to provide higher acoustic insulation. Moreover‚ brick has high efficiency in revisiting and preventing the spread of fire due to its low thermal conductivity and high heat capacity. Low thermal conductivity
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The Hot Tub Mystery Part 1 – The Discovery Questions 1. What observations did the paramedics make? Upon discovery and close investigation on the crime scene‚ the paramedics made am inquisitive observation due and do took notice of the temperature of the water in the hot tub. 2. List the questions raised about this situation or that you think that the investigators should ask of the maid. Since the maid was the only person who is discovered in the crime scene
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