The molecules inside the can (liquid) are always moving‚ and same for the ones that make up the can. There are spaces between the molecules which make it so the can doesn’t collapse by itself. The soda can had a definite shape when it was on the hotplate‚ and the shape of the can after it imploded had a different shape‚ but the volume of the can never changed‚ because all solids have a definite shape and volume. The soda can was on a hot plate and the water was cold. When the can is dipped in water
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table. Next to the lounge is a kitchen. It’s very modern and bright. There is a black and white chequered floor‚ a large red table and two stools. As for some electrical gadgets used for preparing‚ there are a lot of them: a dishwasher‚ a range‚ a hotplate‚ a fridge‚ a freezer‚ a toaster‚ a coffeemaker‚ a cooker hood and so on. There are also a lot of utensils in a drawers: some canisters‚ can and bottle openers‚ pot holders‚ scouring pads‚ casserole dishes‚ pots etc. In front of the table there is
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Mesothelioma‚ more precisely malignant mesothelioma‚ is a rare form of cancer that develops from the protective lining that covers many of the body’s internal organs‚ the mesothelium. It is usually caused by exposure to asbestos.[1] Its most common site is the pleura (outer lining of the lungs and internal chest wall)‚ but it may also occur in the peritoneum (the lining of the abdominal cavity)‚ the heart‚[2] the pericardium (a sac that surrounds the heart) or tunica vaginalis. Most people who
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4. determine percent yield (weight)‚ record UV/Visible spectrum (CHCL3) and determine lambda max. Step 2: Preparation of TPP Copper Complex 1. Place 10mL of N‚N-dimethylformamide (DMF) in a 25mL Erlenmeyer flask with boiling chips and heat on hotplate until slight boil. 2. Add 100 mg (0.16 mmol) TPP to the hot DMF‚ and dissolve 3. Add ~40 mg (0.20 mmol) of Copper (II) acetate‚ continue to heat at reflux for 5 min.
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The Effect of Temperature on The Viscosity of Glycerol Research Question: What is the effect of increasing the independent variable of the temperature of glycerol (30ºC‚ 40ºC‚ 50ºC‚ 60ºC and 70ºC) (+ 0.5ºC) using a hotplate and measured using a thermometer (+ 0.05º)‚ on the dependent variable of time (secs + 0.2) taken for 50mL (+ 0.05ml) of glycerol to flow through a 50cm3 burette (+ 0.05cm3) into a 250 mL beaker (+ 12.5 mL) measured by a digital stopwatch (+ 0.2secs)‚ therefore indicating the
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Lab 2: Spectrophotometric Determination of Iron In Vitamin Tablets Objectives: - To determine the amount of iron in a generic vitamin tablet on a per tablet (in grams) basis. - To prepare standards using a pre-made iron solution to help determine the iron content in our generic vitamin tablets - Determine absorbances of our vitamin tablets and standards using the spectrophotometer Method: 1. Mass three vitamin tablets that contain iron 2. Place each vitamin in a 125-mL Erlenmeyer flask
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Separation of the Components of a Mixture General Chemistry 1 (Chem 101)‚ ISP SCUHS Report 2 January 26‚ 2014 Abstract The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques‚ we examined our solutions such as SiO2 (sand)‚ NH4Cl (ammonium chloride)‚ and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions‚ we made calculations
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while stirring 20 mL of 6.0 M NaOH was added to the flask. Hydroxide ion binds to the copper (II). This is an example of metathesis as the cations and anions exchange partners. Reaction Three‚ Heating the copper hydroxide to a medium boil on the hotplate while occasionally stirring produces copper oxide. Heating allows for decomposition. It also allows the copper to oxidize. 50 mL of hot water was added three times and then decanted the supernatant solution. Reaction 4‚ Copper oxide is dissolved
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being born on the filthy city streets and are not being provided with the proper care. Kozol decided to visit the mother of the baby in a homeless shelter. He celebrated the holidays with families in the shelter where the food was cooked off of hotplates‚ because there were no ovens. He also said that the average child was only six years old. The living conditions in a homeless shelter are very unsanitary and when you are a child your immune system is not that strong and it is very unhealthy. Kozol
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Ana‚ Julia‚ Alison‚ Kevin Bio A 9/12/12 1. What percentage of the work did each group member do? (0-100%-must total 100%) ○ ○ ○ ○ Ana- 25 % Alison- 25 % Kevin- 25 % Julia- 25 % 1. What effort did each group member put forth? (0-100%) ○ ○ ○ ○ Julia- 25 % Alison- 25 % Kevin- 25 % Ana- 25 % Feeding Frenzy Lab Introduction (5 points) Purpose (1 point) Question (1 point) Background (1 point) Hypothesis (1 point) Predicted Outcome (1 point) Methods and Materials (5 points)
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