The Effect of Temperature on the Rate of the Reaction Between Calcium Carbonate and 1.0 M Hydrochloric Acid Josue Montoya IB Chemistry SL Mr. Pham Due Date: 07 March 2013 Dates Experiment Was Conducted: 27‚ 28‚ 29 February 2013 INTRODUCTION Research Question: How does altering the temperature at which calcium carbonate and 1.0 M hydrochloric acid react‚ affect the rate of reaction? Aim: The purpose of the experiment is to demonstrate
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Rectifying any instrumental error that might be present in an instrument. • Investigating the limits and capabilities of a measuring instrument. • Determining the accuracy of the actual volume of a volumetric pipette‚ volumetric flask & measuring cylinder. INTRODUCTION The purpose of this experiment is to investigate the measurement of the actual volume contents of volumetric glassware. If there is a slight variation in this instrument‚ it would cause systematic error and thus‚ the accuracy of
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how density may change. Materials list: 1. water 2. prepared Salt Water 3. Unknown Liquid-methanol 4. Copper Cylinder 5. Unknown Metal-zinc 6. Beaker 7. Graduated Cylinder 10 ml and 20
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one to successfully propel a three-wheeled vehicle‚ and steam power reigned supreme in industry for nearly a century. Early in the industrial revolution‚ inventors struggled to develop an engine in which compressed fuel could be burned within a cylinder housing a piston‚ thus capturing a much greater amount of the potential energy of the fuel. French physicist Nicholas Carnot (1796-1832) published a book in 1824 in which he set out the principles of an internal combustion engine which would use
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Size of liver cubes. Materials: * 100cm3 measuring cylinder. * 5 or 10cm3 measuring cylinder. * 2 teat pipettes. * Forceps. * Stop watch. * Sharp knife or razor blade. * Solution of hydrogen peroxide (6%‚ 4%‚ 2%‚ 1%‚ and 0.5%). * 10cm3 detergent. * Fresh liver. * 100cm3 of distilled water. Procedure: 1. Cut 6 cubes of liver approximately 1cm x 1cm x 1cm 2. Use the small measuring cylinder and teat pipette to measure 4 cm3 of 6% hydrogen peroxide
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also think that as the temperature of the water increases‚ there will be more enzyme activity. Materials: 1. Water/Ice 2. Hot Plate 3. Test Tube 4. Liver 5. Sand 6. Cork 7. Small Circles of Filtered Paper 8. Tub 9. Hydrogen Peroxide 10. Graduated Cylinder 11. Pestle and Mortar Procedure: 1. First‚ I used the pestle and mortar to grind the liver and sand into a paste. 2. Then using tweezers‚ I covered the small circles of filtered paper with the liver and sand paste. 3. I carefully lined up the liver
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Osmosis was clearly shown since the potato cylinders decreased or increased at different concentrations of sucrose. The results supported my hypothesis because for the 0.0 sucrose concentration the average percent change in mass was 16.9%. For the 0.2 concentration the percent change was 3.59%. For
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Before our group began the procedure itself‚ I thought about the whole concept in watching an ice cube melt in a beaker filled with vegetable oil. At first‚ I thought it was going to be interesting‚ right of the bat with bubbles and other reactions that catches interest. Once we started the procedure by inserting the ice cube into the beaker filled with vegetable oil‚ the dullness and boring state also began to flow. We sat there watching for a good five minutes before any visual reaction was taking
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7 Question 2: (20 points) An insulated‚ vertical piston–cylinder device initially contains 10 kg of water‚ 5 kg of which is in the vapor phase. The mass of the piston is such that it maintains a constant pressure of 200 kPa inside the cylinder. Now steam at 0.8 MPa and 400°C is allowed to enter the cylinder from a supply line until all the liquid in the cylinder has vaporized. Determine (a) the final temperature in the cylinder and (b) the mass of the steam that has entered. 0.8MPa 400oC
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angle of materials‚ so that material flows into the sand dryer. Dryer cylinder is a rotating cylinder that have a certain inclination with horizontal line. Material from the high-end to join‚ heat carrier from the low-end entry‚ countercurrent contact with material‚ also have heat carrier and material flow into the cylinder together. With the rotating cylinder materials by gravity run to the lower end. Wet material in the cylinder body to move forward‚ heat by heat carrier directly or indirectly‚ so
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