Specific Heat Of Calorimeter Lab Report

The boiling point elevation constant for water that was experimentally determined in this analysis was 0.4396 °C/m, which was derived from the slope of the trend line in Figure 2. This is slightly lower than the constant provided in lecture of 0.51 °C/m. This could be due to further evaporation of water from the solutions tested via refractive index after the boiling temperature was recorded.

made supported one another. For instance, we observed that the red powder turned black when heat was applied, therefore Oxygen from

Chemical reactions that absorb energy are called endothermic reactions, these reactions are observed by a decrease in temperature of the reaction mixture.

Introduction Calorimetry is to capture energy; you can find both joules and calories from it. This experiment is to show which type would capture energy the best. You will need to know the specific heat of water, as well as the equations to preform this expirement. Purpose

The goal of this specific study is too attempted to get a constant temperature change throughout the experiment. (insert ANY TERMS USED). This study would be related to the second law of thermodynamics, across the board if planned and executed right each time we mixed the corn syrup and the water together we should have got the same thing out of it. 1)Gather your supplies. The supplies being Corn syrup, Water, Graduated cylinder, Beaker, Gloves, Hot plate, lab quest and a pair of goggles.

In this lab we are measuring the amount of energy that is contained in various snack foods. This is usually listed in the nutrition label on the back of any contained foods as a Calorie. Its listed as the amount of Calories in a product per serving. One Calorie is equal to 4,184 Joules. Joules is a measure of heat energy. We will also need to know what specific heat is. It is defined as the amount of heat required to raise the temperature of one gram of water by one degree Celsius.

Determining how a mechanism comes to be is crucial as a scientist and arriving to conclusions is a crucial component which lead to examining and determining which mechanism takes place when two or more substrates are made to react. At the end of the experiment a mechanism was determined based on the purified product’s melting point. This was accomplished by having the reaction take place but also through acquiring the melting point and comparing the number to the melting point which was already established by the scientific community. (Q1) When 0.252 g of trans-cinnamic acid was mixed in 2.5 mL glacial acetic acid and 0.434g pyridinium tribromide was added, the resulting product reflects an addition reaction. In general, reactions take place to achieve its lowest Gibb’s free energy because it’s at

After a week in a dark cabinet, the solid was placed through a vacuum filter to get rid of the excess amount of water through it. When it was finished filtering, the KTOF was put into a Petri dish and weighed to find the actual yield of the reactant that was used in the experiment. The dry weight experiment was used to determine how much water was used to create the solid into KTOF. In order to calculate the amount of water that was used to make the KTOF, evaporating dishes were used to dry out the KTOF. The experiment used a specific amount of KTOF that was weighed on the top loading balance and then placed into a mass of K3[Fe(C2O4)] mortar to crush the solids.

The result of the experiment was 38% of the actual Calories per gram. This percent error occurred from flaws in the construction of the calorimeter.

Table 2: Summary of data collected on concentration of mercury in surface water samples of Onondaga Lake in 1992 (NYSDEC/TAMS, 2002)

Determining the stature of an individual is a very mathematical process. Height correlates with long bone length (Alcantara) so bioarchaeologists have devised multiple formulas that help estimate the stature of an individual within 5 centimeters of the actual height ("Forensic Anthropology"). Before a bioarchaeologist can use the formula, he or she must measure the length of the long bones. The osteometric board is used to determine this. The long bone is placed on the board with one side touching the head of the board. Then, the movable piece is slid until it touches the other side of the bone. The bioarchaeologist will take the measurement given on the board and plug it into a specific formula ("Techniques and Tools of the Trade"). If the long bone used is a femur, the thigh bone ("Femur") , there are three formulas that can be used to determine the stature: 2.32 x femur max length (cm) + 65.53 for male

To learn the difference between endothermic and exothermic reactions and the effects of different compounds and how they react. Research Questions •Which combinations are most high in energy? •How can you tell if a reaction is Endothermic or Exothermic? Research Every chemical reaction that exists is of two things, endothermic and exothermic. The definition of ‘thermic’ is taken by the greek root of therms meaning

Introduction: The theory behind this experiment is the heat of a reaction (∆E) plus the work (W) done by a reaction is equal to

The purpose of this lab was to test the law of conservation of mass by comparing the total mass of the reactants in a chemical reaction with the total mass of the product.

Purpose: This lab taught procedures for determining heat of capacity of a calorimeter and measuring enthalpy of change for three reactions. It also enforced methods of analyzing data obtained through experimentation and calculating enthalpy. These procedures are used in the branch of thermodynamics known as thermochemistry which is the study of energy changes that accompany chemical reactions. Concepts from this lab can be used to determine the potential energy of a chemical reaction. Much of the energy people depend on comes from chemical reactions. For example, energy can be obtained by burning fuel, metabolizing of food or discharging a batter.