Concentrations of HCl on the Rate of Reaction Between HCl and Sodium Thiosulfate Chemistry Lab report Aim: The aim of this experiment is to determine how concentrations of HCl acid affect the rate of reaction when reacted with Sodium Thiosulfate (Na2S2O3). This experiment would require measuring the mass of the reaction over a period of time to be able to determine the rate of the reaction. Safety Precautions: In this experiment‚ SO2 gas is produced from the reaction between Sodium Thiosulfate and
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thermometer and record the start temperature of each trial. Then we will place the tube to the flame with different height differences with each trial (2 in‚ 3 in‚ and 4 in). When each reaction is placed we will then record the highest temperature the water heated too. Then we will measure the the cheeto and record the after reaction mass. Then using the nutritional value 160 cal per 28 grams we will use the equation (accepted - experimental divided by accepted multiplied by 100) to get the percent error.
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Melissa Carrithers AP Chemistry 12/17/14 Rate Law Determination Pre-Lab Purpose: The purpose of this lab is to observe the reaction between sodium hydroxide and crystal violet so that the order of the reaction could be determined along with the rate constant‚ k‚ and the half-life for this reaction. Hypothesis: If the reaction between crystal violet and sodium hydroxide reacts appropriately‚ then the order will be first order. Procedure: Mix 10 mL of sodium hydroxide and crystal violet solution
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The low value of Fi (Fi ≈ 16) defines strong glass-forming liquids [28]‚ while a high value of Fi (Fi ≈ 200) represents fragile glass-forming liquids [29]. The values of Fi for all composition were obtained at all heating rates using Eq. 17 and are listed in Table 3. Since these values of Fi shown in Table 3 are within the above-mentioned limit‚ it is reasonable to state that the prepared (As50Se50)100-xAgx (0 ≤ x ≤ 25) glasses are obtained from strong glass-forming liquids
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accommodation. This report will examine three hostels in Sydney‚ namely Nomads Westend Backpacker (NWB)‚ BIG Hostel (BH) and Sydney Beachouse YAH (SBY) and compare them with respect to their locations and transport options‚ accommodation and room rates and facilities. Firstly‚ there are similarities and differences between the hostels’ locations and transport options. To begin with‚ NWB and BH are similarly situated. Both of them are located in the city centre‚ close to UTS. Additionally‚ they are
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LAMARSH SOLUTIONS CHAPTER-7 PART-1 7.1 Look at example 7.1 in the textbook‚only the moderator materials are different Since the reactor is critical‚ k T f 1 T 2.065 from table 6.3 so f 0.484 We will use t d t dM (1 f ) and t dM from table 7.1 t dM‚D2O 4.3e 2; t dM‚Be 3.9e 3; t dM‚C 0.017 Then‚ t d‚D2O =0.022188sec;t d‚Be =2.0124e-3sec;t d‚C 8.772e 3sec 7.5 One‐delayed‐neutron group reactivity equation; lp 1 lp where 0
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Ufone: In the add it is claimed that we offer the cheapest call rate of this whole world. ‘dunya ki sab se sasti tareen call krne jar aha hai yhe bnda’ Unethical Issues in this ad. The unethical thing is that they are delivering the false information to the customer. They are not giving consumers the worlds cheapest calling rate in actual. They don’t have any prove that their call rates are on the top of the cheapest calling rates of this world. It is an unethical advertisement practice. Fair
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Do you agree? Explain. Q18: John Jamail says that he doesn’t understandwhy companies have labor price variances because most union contractsor other binding agreements set wage rates that do not normally change in the short term. How could rate variances occur even when binding commitments hold the dollar per hour rate constant? Chapter 9: 1‚ 4‚ 6‚ 13 Q1: Pam Kelly says she has no faith in budgets‚ Her company‚ Kelly Manufacturing Corporation‚ spent thousands of dollars
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In this experiment‚ one of the big is osmosis‚ and how it had the overall impact in this excitement a little on osmosis. Osmosis takes place when two solutions of different concentrations are separated by a semi-permeable membrane in which the solvent can pass through but not the solute. In our experiment‚ we used a sucrose solution that will be a hypotonic concentration of solute. This tells us that the solution has a lower concentration of water than does the cells. Therefore‚ due to osmosis‚ the
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An electrocardiogram (ECG) records the electrical activity of the heart and is affected by the magnitude and direction of the current flow. It works by placing electrodes on the skin as the body is a good conductor of electricity. There are leads attached to an amplifier within the machine‚ which must be clipped to the edge of the electrodes. The ECG is recorded from 12 different electrode sites. The amplitude and the shape of the signals depend upon the position of the electrodes (Brown‚ 1999) (Conover
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