Calorimetry Lab Report Waris Butt PHY 112 Mr. Fasciano Class #18336 06/08/14 Purpose: Heat flow will occur between objects in contact until no more heat flow is detectable. Using calorimetry to analyze heat flow quantitatively and the equation: Q = mc ΔT‚ to determine the specific heat capacity of an object and heat flow from or to an object; respectively. Materials: Circle K 44 oz Styrofoam cup with lid Large Plastic
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First‚ the buffer was prepared by using the formula as follows: Figure 1: Calculation for prepare 0.1 M potassium phosphate buffer at pH 6 3.4007g of potassium phosphate was weighed and placed in 300 mL beaker. Then‚ 125 mL of water was added into the beaker that contained potassium phosphate. The mixture was dissolved using the stirring rod‚ and then the magnetic stirring bar was placed in the beaker for further dissolve when measuring the pH. The pH meter was used to measure the solution
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1. Determining the concentration of KMnO4 from the solution created by the stockroom. 16H+ + 2MnO4- (aq) + 5C2O42- (aq) → 2Mn2+ (aq) + 10CO2 (g) + 8H2O (l) Volume of potassium manganate (KMnO4) = 32.5 mL Mass of Sodium Oxalate (NaC2O4): 0.104 [KMnO4] Calculation: = (0.104g of NaC2O4)(1 mol NaC2O4 /134.0g)(2 mol KMnO4 / 5 mol NaC2O4)(1/32.5 mL)(1000 mL /1L) = 0.00955 M KMnO4 2. Using the standardized concentration of KMnO4 calculated above to find the mass percentage of the oxalate ion Equation:
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Experiment 1 Calorimetry Chem 17 Univerity of the Philippines Diliman Discussion All chemical reactions involve energy. By understanding the behavior and connection of energy flow within a chemical reaction‚ we can understand and manipulate them to our advantage. The most common form of energy observed during chemical reactions is heat. The reaction may absorb (endothermic) or release (exothermic) heat‚ depending on the reacting substances. Calorimetry is the process of measuring the heat flow
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Tesla Model S Project References Deloitte. (2009). Connecting with Gen Y: Making the Short List. Retrieved November 17‚ 2011.http://www.deloitte.com/assets/Dcom- UnitedStates/Local%20Assets/Documents /us_automotive_Deloitte%20Automotive%20Gen%20Y%20Executive%20Summary _0107.pdf Hamilton‚ I. (2011). Apple store of car dealerships opens today. Retrieved November 18‚ 2011.http://ocunwired.ocregister.com/2011/11/18/apple-store-of-car-dealerships-opens- today/12163/ Henry‚ J. (2009)
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Many presidents have faced domestic and international problems‚ but it is a challenge not to know about them until you become the president of the United States‚ that is what happened to the 33rd President of the United States Harry S. Truman At the time of Roosevelt’s death‚ Truman was Vice-President for only 82 days and he faced more challenges in domestic and foreign affairs than any other U.S. president did at the time‚ yet he manages to steer this country in the right direction. Truman
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TESLA MODEL S ACHIEVES HIGHEST SAFETY RATING OF ANY CAR TESTED. MONDAY‚ AUGUST 19‚ 2013 -Palo Alto‚ CA. The National Highway Traffic Safety Administration has awarded the Tesla Model S a 5 star rating in every subcategory without exception. Only one percent of all cards tested by the federal government have gotten 5 starts in every subcategory‚ of all vehicles tested‚ including every model approved for sale in the U.S‚ The Model S sets a new record for least chance of injury to passengers. The
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Experiment 1: Calorimetry Nadya Patrica E. Sauza‚ Jelica D. Estacio Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion Eight Styrofoam ball calorimeters were calibrated. Five milliliters of 1M hydrochloric acid (HCl) was reacted with 10 ml of 1M sodium hydroxide (NaOH) in each calorimeter. The temperature before and after the reaction were recorded; the change in temperature (∆T) was calculated by subtracting the initial temperature
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(Pope) Chapter C11 S Corporations 1) The S corporation rules were enacted to allow small corporations to enjoy the nontax advantages of the corporate form of business without being subject to the tax disadvantage of double taxation. Answer: TRUE Page Ref.: C:11-2 Objective: 1 2) Up to six generations of a family are considered as one shareholder for purposes of the 100-shareholder limit. Answer: TRUE Page Ref.: C:11-4 Objective: 2 3) Corporations and partnerships can be S corporation shareholders
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In order to describe the molar volume of pure water the equation V_3=M_3⁄ρ_(3 ) is used‚ whereas those of sodium nitrate and the polyether compound poly(ethylene glycol) (PEG) are shown by V_1=V_(∅_1)^∞and V_1=V_(∅_2)^∞. In these two equations‚ V_(∅_1)^∞ and V_(∅_2)^∞ which are the apparent molar volumes at infinite dilution of sodium nitrate and poly(ethylene glycol)‚ must be computed on the basis of data on apparent molal volume (V_∅). The following equation shows the relation of the V_∅ of a
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