Calorimetry Lab Report

Step 3: Use the thermometer to identify and record the temperature for room temperature, in your refrigerator, in your freezer, and then research the temperature of boiling water (do not take this temperature) and record them in Table 2.

The calorimeter was covered as quickly as possible with the cardboard and the thermometer was placed through the cardboard 's hole at the proper height. A stopwatch was used for recording the temperature inside the calorimeter every minute until five data points where temperature is constant or decreasing were observed. Since, this calorimeter did not provide a automatic stirrer, it was essential to be swirled during this process to ensure proper mixing. This procedure was repeated twice more to determine three Ccal

Place the beaker on the hot plate, place the thermometer in the beaker and set the hot plate to 5oC.

will open in the Calorimetry laboratory with a calorimeter on the lab bench and a sample of

Aim: To plan, conduct, evaluate and report on an investigation of chemical changes, and make recommendations for their use as an energy source in Heat-and-Eat meal packs.

Then pour 2 tablespoons of hydrogen peroxide into a cup and place a thermometer into the same cup. Pour one tables spoon of yeast into the cup and record the temperature every 10 seconds. Lastly make a graph that tells you the temperature per every ten seconds. For lab B make another chart like lab A's then place 2 tablespoons of vinegar into a cup and pace a thermometer into that cup. After that put one tablespoon of baking soda into the into the cup with vinegar.

According to the data table, the Marshmallow was the heaviest while the Chex-Mix was the lightest. Also, the Cheetos trial produced the highest water temperature. During the trial process, four CHEEZ-IT’s broke when attempting to place the CHEEZ-IT on the paper clip. Also, during the first Cheetos trial the Cheetos did not burn entirely, so a second trial was done and the sample burned completely. The Chex-Mix burned the fastest while the Marshmallow burned the slowest. Several samples we’re slightly difficult to light with the match, also putting some of the samples onto the paper clip was troublesome. An environmental factor that affected the experiment was the excess CO2 in the air because all the lab groups were burning the snack foods

Next get the three types of waters with the different temperature and measure 50ml of water. Take the thermometer and write down the temperature of the water . Then measure 4 grams of sugar of the balance with the wax paper. Then you are going to take the sugar and pour it in the hot water and immediately start the stopwatch and start timing the sugar dissolving. Stir with a straw until fully dissolved.

Take the metal probe at the end of the thermometer and insert it into a plastic cap.

How does someone determine the amount of calories in a single cheese puff? The problem is designing and conducting an experiment to answer this question. In this experiment, two Cheetos were individually burned under an Erlenmeyer flask filled with 25 mL of water. The temperature of the water before and after it was heated was measured with a thermometer and then recorded. Using the masses of the 2 cheese puffs, the specific heat capacity of H2O, and the changes in temperature of the water - the number of calories in each of the Cheetos was

The ring stand was set up along with a clamp to hold the temperature probe. A hot plate was placed underneath, leaving enough space between the two to fit a beaker. 50mL of 3M NaOH was poured into a 250ml beaker. After adding a stir bar, the beaker was placed on the hot plate. 3.750 grams of NaAIO2 was added to the beaker and the thermometer was then lowered in. Caution was used in making sure the thermometer did not touch the bottom of the beaker.

Calorimetry is a processed used to measure the amount of energy there is in a food, where heat is produced depending upon how much energy is in the food. This works by burning the food, which will create an exothermic reaction and will heat the container of water, which will provide a measurement for the amount of energy in each food. The calculation for this is for every 1oC of temperature change per 1ml of water, there is 1 calorie (Jennings [ONLINE]). There would be a similar from of calorimetry used commercially just higher tech and that’s how we get our labelling of food packets.

The styrofoam cups were used to store the acid (cup was labeled A) and base (cup was labeled B) prepare for them to be mixed. A lid was put on cup A and then the temperature probe was inserted to begin to measure the temperature

The prediction which was believed that the class average energy for popcorn, cheese and bacon balls and macadamia will not match the true nutritional value which proved to be true and was supported. Analysing all the systematic and random errors that occurred in this practical, it shows that it made a huge difference in the final results between the class average and the true value. So that makes this practical inaccurate and completely unreliable proves the prediction correct.

Rinse the thermometer with tap water and dry. Insert the thermometer in the calorimeters top and measure the initial temperature of the base 28.2∘C