ipl-logo

Hand Warm Lab Report

289 Words2 Pages

Our objective was to pick the best chemical to be used in a hand warm. This chemical had to be cheap, relatively safe, and must raise the temperature by 20oC and no more. We add 6 different chemicals to water we record the inshell temperature and then add one a the 6 chemicals to the water and record the temperature change of the water. We also add cold water hot water together to find how much heat would escape the calorimeter. We found that the calorimeter absorbed 71.1J/oC. Then this information to calculate the energy that was released by all of the chemical reaction. We found that Joules from NaCl = 340 J, NH4NO3 = 1340 J, CaCl2 = -2320 J, LiCl = -3600, Na2Cl3 = -720 J, NaC2H3O2= 1070 J. Then we used energy release from one one these rxn to calculate the Hor the KJ per mol rxn. …show more content…

After seeing this data the two most effective look chemical at resisting energy was CaCl2 and LiCl. So we looked at the price of both of this chemical CaCl2 cost 6.55$ per 500g and LiCl cost 32.75$ per 500g because CaCl2 was substantially cheaper we decide to chose it to use in own hand warmer. We calculated that it would take 22g of CaCl2 to create a 20oC increase in temperature of 100ml of water. Some sources of error in this lab, would be heat escape from not be able to replace the lid of the calorement went adding chemical into it, inaccuracies in the balance, and not waiting of the proper time to recode the

Show More
Related

Cough Drop In Water Temperature Lab Report

165 Words | 1 Pages

Temperature: In this experiment, we will examine how the temperature affects the decomposition rate of a cough drop in water. There will be 3 different temperatures (cold, warm and hot) and all of the three experiment will be performed at the same time. Equipment: 3x Hot plates 3x Magnetic stirrers 3x 150 mL beakers 3x Cough drops 3x

Read More

How Fast Does Alka Seltzer Make Gas

621 Words | 3 Pages

The control in the experiment is water. Units used while timing the productivity of gas from an Alka-Seltzer tablet in different temperatures is, seconds. In order to find out if temperature controls the rate of chemical reaction, whether hot water is a more effective way to make the gas produce at a faster speed, it would be necessary to compare the results of different temperatures at the end of each trial. In order to do this the scientists will measure the volume of gas that is produced within a 10 second interval time after the tablet begins to react.

Read More

Ap Chemistry Semester 1 Final Review Paper

810 Words | 4 Pages

Use the following data to find the energy change in J of each system Specific heat of ice= 2.03 J/gC Specific heat of steam= 1.99 J/gC Specific heat of water= 4.18

Read More

Lab Report Chemistry Lab

728 Words | 3 Pages

The lab started off by measuring critical materials for the lab: the mass of an an empty 100 mL beaker, mass of beaker and copper chloride together(52.30 g), and the mass of three iron nails(2.73 g). The goal of this experiment is to determine the number of moles of copper and iron that would be produced in the reaction of iron and copper(II) chloride, the ratio of moles of iron to moles of copper, and the percent yield of copper produced. 2.00 grams of copper(II) chloride was added in the beaker to mix with 15 mL of distilled water. Then, three dry nails are placed in the copper(II) chloride solution for approximately 25 minutes. The three nails have to be scraped clean by sandpaper to make the surface of the nail shiny; if the nails are not clean, then some unknown substances might accidentally mix into the reaction and cause variations of the result.

Read More

Calorimetry Lab

868 Words | 4 Pages

We know that energy is constant therefore any heat lost by our reaction is transferred to the surroundings. I was not able to locate any literature values for the change in enthalpy, despite looking very extensively. Error Analysis: For this experiment I assumed that the specific heat capacity for all solutions was 3.853 J/g°C.

Read More

Biology Unit 9

313 Words | 2 Pages

Elijah Brycth B. Jarlos IX-Argon 1. Multicellularity is a condition of an organism to have multicellular cells. An example of a organism who has multicellular cells are plants, animals, and humans. The main reason of why scientists have a hard time finding a good set of existing organisms to compare. Is neither the first set of organisms which is being compared is dying as fast as the second specimen is being examined or they just can’t find the right species.

Read More

Cold Pack And Exothermic Reaction Lab Report

722 Words | 3 Pages

During this investigation, I strived to figure out if an endothermic or exothermic reaction occurs in a cold pack. This goal was formed based on the guiding question: What type of chemical reaction occurs in a cold pack? To conduct this investigation, I began by creating a list of procedures to follow in order to stay on track and work efficiently. Firstly, I had to collect the materials I needed and work out the correct amounts of each substance to use in order for the reaction to work correctly.

Read More

Lauric Acid Lab Report

385 Words | 2 Pages

The purpose of this lab was to determine the melting/freezing point of a fatty acid and compare it to the melting/freezing point of a different fatty acid. We tested Lauric Acid and compared it to Stearic Acid. To do this we put a vial with some solid Lauric acid under a Bunsen burner. In the acid we placed a LabQuest temperature probe to read the temperature four times a minute. We then heated the vial using the Bunsen burner and collected our data.

Read More

Cold Water Lab

630 Words | 3 Pages

Introduction The intent of this experiment is to understand how hot and cold water interact with each other by combining clear hot water and black ice cold water. I hope to learn more about how hot and cold water interact with each other. As of now, I know that cold water is denser than hot water. Knowing this I formed my hypothesis.

Read More

Two Primary Types Of Hand Warmers

507 Words | 3 Pages

Most people can guess that the handwarmers we use so often, especially during the colder seasons, is warm as a result of chemical reactions. How is it, however, that with a simple shake, it awakens the chemicals to suddenly react with each other? Which chemicals are the best at giving off heat during reaction? How do they actually work? Our recent study of thermodynamics has led me to become curious about those little helpful packages of warmth.

Read More

What Is Grub?

1899 Words | 8 Pages

In the warmth exchangers there are normally no outer responses to warmth and work. Down to earth applications incorporate worries about warming or cooling fluid vanishing or buildup of one or different liquid streams. In different applications, the objective may be reestablished or expel warmth or sanitization, purification and division, refining, fixation, crystallization, or control of the procedure liquid. In a few gadgets, and liquids that trade heat in direct contact. The vast majority of the warmth exchanger, and method for warmth exchange between the divider and Bond or transient way.

Read More

In What Ways Can Heat Energy Be Transferred From One Substance To Another?

2140 Words | 9 Pages

Consequently, it was discovered that the aluminium can with cotton wool that acted as an insulator was discovered to be the best material as the final result was 69.5°C.7 This differed to the aluminium can without material as an insulator with a temperature of 62°C at nine minutes. The can with aluminium foil started off with a temperature of 73.5°C and slowly made it’s way to 65°C, proceeded it to be the second best insulator despite the material to have worked better at being a conductor. The can that had no materials was discovered to be the least efficient at trapping heat energy from hot water because one layer will not make a big difference as because aluminium is known to conduct heat better than insulating thermal

Read More

Temperature Of Soup

1433 Words | 6 Pages

The plastic container performed the worst because at the first hour, the temperature dropped to 33 degrees Celsius compared to 49 degrees Celsius of homemade container. The way the the temperature dropped in plastic container was fast after one hour; however, after few hours later, the temperature dropped slowly. It was not the best when it comes to storing heat of food, specifically soup. According to Tom Henderson, 2017, the thicker or longer the object to receive heat, the more heat will be lost but if the insulation is thicker, then the less heat will be lost. According to Heba Soffar, 2015, heat is a thermal energy that flows from a warmer region to a much colder or cooler

Read More

Enthalpy Of Neutralization Lab Report

1054 Words | 5 Pages

Another way to calculate the enthalpy of neutralization is to assume the density of the solution to be equal to the density of water in order to assume the mass of the solution. 1.00 g 〖cm〗^(-3)×50 cm^3±0.96 %= 50.00 g ±0.96 % The heat released can then be calculated using the assumed mass. q=50.00 g±0.96 % ×4.18 J g^(-1)

Read More

Heat Of Fusion Essay

955 Words | 4 Pages

In this experiment, the principle of conservation of energy was used and the first equation was as follows: ∑∆Q = 0. Similarly, ∆Q = mLf. Therefore, ∆Qc + ∆Qw + ∆Q ice + ∆Qi →(l) + ∆Q m ice

Read More

More about Hand Warm Lab Report

Related Topics

Open Document