Temperature) q=msΔT Within a calorimeter is where the reactions within this lab take place. A calorimeter allows the quantity of heat either manufactured or devoured to me measured. Exothermic reactions yield negative ΔH values‚ while reactions that consume and necessitate heat are endothermic and give way positive ΔH values. Solutions that are water based is incorporated heavily in the chemical reactions within this lab; therefore‚ the specific heat of water‚ 4.184 J/g C‚ can be replaced for s
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of heat lost and heat gained. The purpose is to also be able to determine the enthalpy of neutralization for the reaction of a strong acid (phosphoric acid) and a strong base (sodium hydroxide). Experimental: Materials: The materials needed for this lab included; 2 large beakers‚ a Calorimeter Styrofoam cup‚ computer‚ stirring rod‚ 2 thermometers‚ Logger Program‚ and Probes volumetric pipet. Sodium hydroxide (NaOH) (corrosive and toxic)‚ and phosphoric acid (H3PO4) (corrosive and toxic) were used.
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Unit 2 Question Packet Name …………………KEY……………………… Matter & Energy Period …………. Skills 1. classifying types of matter 2. interpreting particle diagrams 3. identifying physical & chemical properties of matter 4. separating Mixtures 5. converting Temperatures 6. identifying physical & chemical changes in matter Skill #1: Classifying types of matter - refer to your notes and RB p. 1-2 Classify each of the following with the combination of terms
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Marybeth Brooks Physics Lab III Specific Heat Capacity Lab May 25‚ 2011 Abstract The specific heat capacity of various metals can be calculated and compared to accepted literature values. Dropping heated metal samples into a calorimeter filled with water and then measuring the change in the temperature of the system accomplished this. The metal samples were heated in a boiling water bath and were assumed to be at 100 C when they were removed. It was added to a calorimeter and stirrer
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Tashia & Tobi Lab Report experiemt 5 INTRODUCTION In this experiment we were wanting to find the specific heat of an unknown metal and determining what metal it was by using the formula q=c X m X change of temperature. We did two trials to compare the two and see what we come up with. EXPERIMENTAL First we chose an unknown metal‚ in which our unknown was unknown metal 2‚ the metal was gray and irregular shaped. We setup the calorimeter and got a mass of it just being empty then we got
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Title: Food Energy Lab Report Date of Activity: 8-28-13 through 8-29-13 Purpose: The purpose of the lab was to measure the amount of energy contained in a gram of certain foods. Hypothesis/Prediction: I hypothesize that some of the foods are going to be difficult to burn. Procedure: 1. Weigh the weight of empty can and food items. 2. Fill can approximately one third full of water. 3. Weigh the can after water is in the can. 4. Take the temperature of the water in the can. 5. Place the
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extract is added to each tube to the one centimeter mark. The following portion of the experiment was in segments for each tube. Tube one was placed in an ice-bath by adding ice and water in a 250ml beaker. Tube two was placed in the tube rack on the lab bench in a room temperature environment. Tube three was placed in a water bath at 50 degrees celsius‚ and tube four was set in the 70 degree celsius water bath. Tube five was placed in a boiling water bath of a beaker on the hot plate while wearing
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Cellular Respiration Lab Report Wednesday 8:00 A.M. Lab March 2nd‚ 2005 I. Introduction In this lab we are measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease
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Winter Survival Exercise Situation You have just crash landed somewhere in the woods of southern Manitoba or possibly northern Minnesota. It is 11:32 am in mid-January. The small plane in which you were travelling crashed onto a small lake. The pilot and co-pilot were killed. Shortly after the crash‚ the plane sank completely into the lake with the pilot and co-pilot’s bodies inside. Everyone else on the flight escaped to land dry and without serious injury. The crash came suddenly before the
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Effect of pH on Enzyme Activity Athenaa Jeyachandran Mr.Menes Course Code January 21st‚ 2013 The Effect on Enzyme Activity Due to Temperatures Purpose: The purpose of this lab experiment is to examine how different temperatures affect enzyme activity using hydrogen peroxide. Hypothesis: My hypothesis for this experiment is that temperatures near body temperature is when enzyme activity will be at its highest. I believe this will occur because in our body‚ enzymes
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