So one Calorie (abbreviated as 1 Cal) is the same as 1,000 calories, also called 1kilo calorie (kcal). . Carolina Biological, and Our kernels bobbed in the vinegar solution for over a minute before finally falling to the bottom of the jar. Then, place pennies into your barge, one-by-one to see how many it can hold before the weight of the pennies is too great and your barge sinks. Directions. Do the calculation and write your number down in the column "Qwater for 1g food". Add 5g vegetable oil into the beaker. Do you have specific questions about your science project? Step 3: Add 2 tablespoons of popcorn kernels to the pouch. Count 100 popcorn kernels from the same bag used in the control experiment. Fill a large basin with water, then cut a piece of tin foil that is 5 inches by 6 inches. But we appreciate that youre doing a science fair project and you want a quick answer, which brings us to our second point: Its your science fair project; you have to do your own experimenting and see what happens. We advise you keep it the same for all your trials. To demonstrate this to the Scouts, try this experiment from Home Training Tools: Put a single kernel of popcorn in a dry test tube and cover the mouth of the test tube with aluminum foil. Now let us have a great time! We found that the dancing popcorn experiment worked best when we used baking soda and vinegar. The Geiger-Marsden experiment, also called the gold foil experiment or the -particle scattering experiments, refers to a series of early-20th-century experiments that gave . Touch the metal base of a light bulb to the positive end of the battery. We all love S'mores. This dancing popcorn experiment is the perfect way to test the duration and effectiveness of different chemical reactions, and it takes just 3 ingredients to complete! Is the efficiency for all food items more or less the same? First, we dont mention or talk about brands. The pressure inside the grain will reach 135 pounds per square inch before finally bursting the hull open. Using foil boats, your little sea captain will learn about buoyancy. Cheerios is a registered trademark of General Mills. Its likely theyre using it to bake out their equipment, the same as does SLAC National Accelerator Lab. To measure the chemical energy stored in food, you will oxidize the food much more rapidly than the cells in our body do by burning it in air. Will that help the heat get inside and pop the corn more quickly? 3. Science Buddies Staff. Add the vinegar and watch the corn start to hop up and down! Every popcorn experiment should include a hypothesis, a test, a variation, and data recording. As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases. How you can Calculate the Thickness of Aluminum Foil, Building Your Personal Paper Foil Capacitor, Your Eyes Get It: Scientists 3-D Print Human Corneas, Is Innovation Or Policy More Important For Environmental Issues, What Is Geometry Optimization In Computational Chemistry, How Long Is The Ap Computer Science Principles Exam. When you place an object into water, it displaces the water out of the way. Science Buddies participates in affiliate programs with The U.S. Department of Agriculture is a good online source of information about nutrition. Note this value (expressed in milliliters) in your lab notebook. Popcorn recipe 25g popping corn Oil 3 tbsp / 40g butter Pinch of salt Place enough oil into a large heavy based saucepan so that it just covers the bottom. Take a large 2 foot piece of heavy duty aluminum foil and shape it into a boat or bowl shape, so that the sides are pulled up but a well exists in the middle. Using aluminum foil with your food while it's air frying helps the spices to stay mixed with the food, rather than dripping through the basket and under the food, says keepingthepeas.com. Aluminium foil (or aluminum foil in North American English; often informally called tin foil) is aluminium prepared in thin metal leaves with a thickness less than 0.2 mm (7.9 mils); thinner gauges down to 6 micrometres (0.24 mils) are also commonly used. For safety reasons, use the grounding rod to turn on the generator and stand a fair distance away from it while . Holes are drilled along the bottom edge of the large can to allow air to enter. Fluffy, hot kernels with. See more ideas about crafts, tin can crafts, can crafts. Be patient, some food items like nuts might take a while to catch fire. Instructions: Fill your bowl up with water. With the dancing popcorn experiment, you can teach chemical reactions in seconds! Your homemade version will not reach the same efficiency to catch the heat released while burning the food; in other words, only a fraction of energy stored in the food will be converted to energy captured in the water and measured by your calorimeter. Copyright 2002-2023 Science Buddies. How many calories is this? You'll need to weigh your oil before popping. Or even better, just how can a steel ship have a heavy load without sinking? Save this idea for later so you don't forget to use it! Test their skills! Notice that the grams (g) from the mass of the water and the degrees Celsius (C) from the change in temperature cancel out with the grams (g) and degrees Celsius (C) in the denominator of the units for specific heat. More youthful kids may also make an aluminum foil boat. Since 1mL of water has a mass of exactly 1g, this water will have a mass of 100g (mwater = 100g). . Aluminum foil Small dried beans (like lentils), unpopped popcorn, dry rice, or tiny pasta. The kernel continues to heat to about 347 degrees. When the balloon is inflated -- and before it bursts -- pinch the mouth of the balloon and remove it from the bottle. When the popping stops, count how many of the 100 seeds popped and how many did not pop. Peace! A slight breeze helps create bigger flames. However, this is only true if all the energy released during the reaction is used to heat the water, and none of it gets "lost.". . Don't touch the wire. First: Stern warning / disclaimer. This is opposed to insulators, which don't allow charges to move freely through them. Kids learn through play- teach letters, shapes, numbers, & colors with foil! These relative values show you how much more or less caloric food items are with respect to the item chosen (here Cheerios). If you are doing this experiment with younger students, you might want to puncture the kernels yourself. Video advice: 10 Cool Aluminum Foil Life Hacks! 5. Popcorn is scientifically known as Zea mays everta. Scissors. Sodum chloride disturbs this oxide layer. Which brand of microwave popcorn pops fastest? Have you ever wondered how a ship made of steel can float? The reference level for a normal diet is 2,000 Calories. The popcorn will pop until you can't hear the kernels shaking around anymore- this is when it's done. Caffeine reaction involved generates a lot of heat with an aqueous aluminum chloride solution, and could be harmful if you dont go ahead and take proper safeguards. STEAMsational offers STEM and science lesson plans and teaching resources to provide a firm STEM foundation for children in the classroom or home. Science Buddies, a 501(c)(3) public charity, and keep our resources free for everyone. Step 2: Pinch and fold the edges of the aluminum foil together to form a pouch. Bibliography. Slowly lower the charged balloon toward the sheet of tin foil, and as you close in with the balloon, the foil balls will react to the static charge and begin jumping like exploding popcorn kernels, but won't stick to the balloon. When the popcorn is done, count how many of the 100 seeds popped and how many did not pop. Ever wondered the way a ship made from steel can float? 1. Note that the mass of the water used in your calorimeter is not listed in the table. Let the spiders lift off the foil. Im not even talking about FOIL the mnemonic device to helps you multiply binominals. Click the link to determine the other interesting experiments can be achieved using copper sulfate! SCS Alka-Seltzer Original Antacid and Analgesic 116 ct. Make sure to also take a look at these similar experiments to determine the elephant tooth paste experiment, and also to learn how to extract potassium metal from the blueberry and the way to create tin crystals in tin chloride solution! You assume all risk and liability. Of the 4 most common types of corn . From making hats to maintaining equipment, aluminum foil is advancing science in these five ways. Stop and Breathe - Unpacking the Hidden Controversy of 125 Report Card Comments Stir the water in the small can and measure the initial temperature (. Soak the kernels in water overnight. Follow the same popping procedure used in the control experiment. Most scientists do not consider aluminum toxic. First, pull off a sheet of aluminum foil that is about twice as long as the pan. To make a handle, bend the hanger into a square that will fit around the pie pan. Awesome Chemistry Experiment!! Do you think the amount of Calories you measured is likely to be higher or lower than the true value for each food item? His literary work has appeared in "The Southampton Review," "Feathertale," "Kalliope" and "The Rose and Thorn Journal.". Each30% Pure Vinegar Home&Garden (1 Gallon)Arm & Hammer Pure Baking Soda, 5 lbArgo Corn Starch 16 oz. Sweet Buttered Popcorn1 tbsp oil2 tbsp sugar1/3 C popcorn1 1/2 tbsp butteraluminum foil #TikTokViral #popcornGood luck! Follow the same popping procedure used in the control experiment. Poke a hole in the foil above where the plastic cup is located. Wrap a bit of foil around the knobs to protect them from stray paint drips, and save your painter's tape for baseboards and door frames, where those straight blue edges are far more critical. The foil hack is compatible with any stovetop popcorn routine; all you have to do is swap out your usual pot lid for a sheet of foil. Diagram of a homemade calorimeter. They can investigate how many gems each boat can hold before it starts to sink, maybe even have a little competition. For preschoolers and early elementary students, you can use this activity as a fun Thanksgiving science experiment or simple science demonstration for chemical reactions. Do background research to find out the chemical composition of candle wax (paraffin). Proceeds from the affiliate programs help support Procedure 1. Real tin foil these days is used more for things like electrical capacitors than food prep or storage. We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. About 1/2 to 1 tablespoon of oil. When we talk about food energy, we also use the word Calorie (Cal) (note uppercase "C"), but it is a different unit. The initial temperature of the water is 20C. Record this number. Add a long stick and the foil together. The force of buoyancy is pushing the boat toward the surface. Don't wad them too tight, however. 330 North Wabash Avenue, Suite 2000 | Chicago, IL 60611
Even with low efficiencies, this project will allow you to rank different kinds of food from more caloric to less caloric and will allow you to predict, with reasonable accuracy, the ratio of caloric content of different types of foods. You can use the conductive properties of tin foil in experiments about electricity, or its physical properties to demonstrate the interplay between buoyancy and gravity. In addition to teaching classes for the Science Center, Andrew is also part of a team of educators currently creating new programs aligned with the new Next Generation Science Standards for grades PreK-9. Aluminum salts, like sodium aluminum phosphate, are found in many processed foods. Weigh the food items to be burned and record the mass in the column "Food: Impale the food items on the needles. And if we had a dollar for every time weve answered it, we would be very, very poor. Our gourmet popcorn is always popped and packed fresh and made with high quality ingredients. from Radboud University NijmegenGraduated 2002Lives in Lausanne, Switzerland2013present, Your email address will not be published. Standard household foil is typically 0.016 mm (0.63 mils) thick, and heavy duty household foil is typically 0.024 mm (0.94 mils). For example: Avoid questions like Which brand tastes best? because it is a subjective question and difficult to measure. Each group of kernels were heated for exactly 2 minutes in our microwave. In this project you will learn a method for measuring how many Calories (how much chemical energy) is available in different types of food. Less complicated since you may think. Remember to label your axes, and add the units and a title to the graph. Box (Pack of 4). In this interesting chemical experiment, we will learn how to make copper metal powder from aluminum foil, great for school or home chemistry! Count 100 popcorn kernels from the same bag used in the control experiment. Place the oil, popcorn, and salt in a large, 6-quart, metal mixing bowl. When the burnt food item has cooled, carefully remove it from the needles and weigh the remains. Youll get an awesome example of a chemical reaction this way! The 28th degree in the 1-40 of our lessons is one of the longest. The goal of this science project is to determine which food items store more chemical energy; you will determine this by burning the items and capturing the heat given off in a homemade calorimeter. Following example where you burn 1.1g of almonds and start out with 150milliliters (mL) of water in the calorimeter might make the equation clear. Christopher Cascio is a memoirist and holds a Master of Fine Arts in creative writing and literature from Southampton Arts at Stony Brook Southampton, and a Bachelor of Arts in English with an emphasis in the rhetoric of fiction from Pennsylvania State University. Fold up the edges of the tin foil so youve constructed a small barge that will float and be able to hold objects inside of it. Have students record their hypotheses before completing each experiment. The knowledge that water is inside each kernel of corn might lead students to wonder about some things Introduce the ideas below and challenge students to hypothesize what will happen and why. When at least one food item catches fire, place the. Categories Thanksgiving STEAM Activities, Science Experiments. It's easier done than said. Science Buddies, a 501(c)(3) public charity, and keep our resources free for everyone. Staple the folds to the pan, and then continue folding the rest of the foil and stapling every few inches until the dome is sealed all the way around the pan. How Much Weight Can Aluminum Foil Boats Float? So try this easy project out for a crunchy, salty, late-night snack perfect for sharing or inhaling by yourself! Everyone knows popcorn is a great tasting snack, but it is also a fascinating food and great subject for your science fair or school project. What is meant by a "balanced" diet? Looking for a fun popcorn experiment? You want the crimp to go in by a couple of folds. No matter how precise and expensive, its probably wrapped in foil. Add the popcorn and let it pop. It will help you take notes as you perform your trials. In this project, for food Calories, we will be careful always to use an uppercase "C". Crimp around the edges to make a packet. In general, if you take a solution containing ions of a metal, and put a piece of a more reactive metal in it, the ions will switch placesthe more reactive metal will go swimming in the solution, while the less reactive one will take its metallic form. Table 3, below, can help you. Instructions: Fill your jar with water and add a couple drops of food colouring. The two forces at work here are gravity and the buoyancy created by the barge as it displaces some of the water. Add your popcorn kernals and then pour over the oil. Ted's Bio; Fact Sheet; Hoja Informativa Del Ted Fund; Ted Fund Board 2021-22; 2021 Ted Fund Donors; Ted Fund Donors Over the Years. You may need to stir the popcorn kernels up a bit to get them to start jumping. Spanish-Language Website | Thai-Language Website | Mandarin-Language Website. To analyze your data, you will first calculate the energy captured by the water for each trial. Tie a bead to one end of one of the pieces of string, string it through one of the holes in one of the flaps so that the bead ends up . Step 1: Supplies You will need: - Popcorn - Oil - Salt (optional, and any other seasonings you like) - Pie pan - Wire hanger - Scissors - Stapler - Aluminum foil Add Tip Ask Question Comment Download Step 2: Measuring First, pull off a sheet of aluminum foil that is about twice as long as the pan. Tin-Foil Popcorn When not insulating hot foods or protecting surfaces, tin foil can be used for conducting science experiments. Chemists have carefully measured this property and assembled a chart known as the reactivity series. Popcorn is a whole grain and is made up of three components: Methods of popping: microwave, stovetop, or air popper, Storage conditions (moisture, dryness) for kernels, Total number of kernels popped or unpopped. I call it Fire Pop. After a couple of batches I decided that pepcorns not my jam, but it doesnt even matter because this video is a nonstop homemade popcorn hack parade. Start with your calorimeter disassembled. What are the basic chemical structures of fats, sugars (also called carbohydrates) and proteins? Did the kernels with more water pop bigger or faster or better? You will impale the food to be tested on the sharp ends of the needles. PROCEDURE: Take one match and wrap a small piece of aluminum foil around the match-head. If we had a dollar for every time we have been asked this question, we would be very, very wealthy. When not insulating hot foods or protecting surfaces, tin foil can be used for conducting science experiments. Notice how (). Outcome: What is it you actually want to find out? You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Did the preheated kernels pop bigger or faster or better? oz. Place the plate or balloon on your cutting board, and use the gloved hand to pick . What is your Science Buddies kit order number? Place a C battery -- negative end-down -- on top of one end of the tin foil strip. For any other use, please contact Science Buddies. (Puncturing 100 kernels could take some time; you might prepare the kernels ahead of time or use 10 kernels instead of 100.) Add a small handful of popping corn kernels. Tape a large sheet of tin foil to the top of a table. Use small strips of foil to fold around the hanger and around the pan edge at the hook and bottom ends of the hanger, and staple. Procedure. Then, place pennies into your barge, one-by-one to see how many it can hold before the weight of the pennies is too great and your barge sinks. Follow the same popping procedure used in the control experiment. It's report card time and you face the prospect of writing constructive, insightful, and original comments on a couple dozen report cards or more. Then, cut a 6-inch-by-6-inch square of tin foil. All you need to do is, open the packet, pour it in a microwave-safe bowl, add condiments of your choice and microwave. It still can be used for packaging materials and such, but since it's not the popular or. Plus, you dont have to play the how ajar is too ajar? game, or handle a hot, heavy pot lid dripping with condensation. Cover the bottom of each jar with a small handful of popcorn kernels. Putting the baking soda into the vinegar slowly helped reduce the reaction time, enabling more of the popcorn kernels to dance.. 2. Slowly pour water around the spiders. In no time, youll have perfectly crispy, fluffy popcornwith no drips to ruin the party. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. 2 tablespoons of unpopped popcorn kernels will make about a quart popped, 4 tablespoons = 1/4 cup which would yield about 2 quarts popped. So let us say that we start out with 100milliliters (mL) of water in the calorimeter. It provides a highly porous surface that is exposed to oxygen in the air. Five Ways Aluminum Foil Is Advancing Science, Awesome Chemistry Experiment!! Put aside your worries about your air fryer catching on fire, and focus on all the ways using aluminum foil there can help you: Utilizing aluminum foil in the air fryer will cut down on mess and significantly reduce overall . To pop the kernels, students pipette enough cooking oil into a 250-mL Erlenmeyer flask or beaker to coat the bottom, add the kernels and measure the mass. The soft starch inside the popcorn becomes inflated and spills out, cooling immediately and forming into the odd shape we know and love. You will need the following supplies for the dancing popcorn experiment: ball mason 12 Jar with Lid-Regular MouOrville Redenbachers Gourmet Popcorn Kernels, Original Yellow, 8 lbMembers Mark Distilled White Vinegar Jug, 1 galArm & Hammer Baking Soda, 5 LbsCrisco Pure Vegetable Oil, 32 Fl OzSCS Alka-Seltzer Original Antacid and Analgesic 116 ct.The Mason Jar Scientist: 30 Jarring STEAM-Based ProjectsMARATHON Adanac 3000 Digital Sports Stopwatch Timer with Extra Large Display and Buttons, Water Resistant- Yellow, The Mason Jar Scientist: 30 Jarring STEAM-Based ProjectsBall Regular Mouth Mason Jars with Lids and Bands, 16-Ounces (4-Pack)Crisco Pure Vegetable Oil, 32 OunceBarbasol Soothing Aloe Thick & Rich Shaving Cream 10 Oz (2 Pack)Alka-Seltzer PFY BXAS50 80659297 Antacid and Pain Relief Medicine, Two-Pack (Pack of 50)Kadaon 10X Handheld Magnifier Antique Mahogany Handle Magnifier Reading Magnifying Glass for Reading Book, Inspection, Coins, Insects, Rocks, Map, Crossword PuzzleBORAX 20 Mule Team Laundry Booster, Powder, 4 PoundsFine Ground Celtic Sea Salt (1) 16 Ounce Resealable Bag of Nutritious, Classic Sea Salt, Great for Cooking, Baking, Pickling, Finishing and More, Pantry-Friendly, Gluten-FreeMcCormick Assorted Food Color, 1 Fl Oz (Pack of 1)Food Coloring 12 Color Vibrant Cake Food Coloring Set for Baking, Decorating, Fondant and Cooking Upgraded Liquid Concentrated Icing Food Color Dye for Slime Making, DIY Crafts .25 fl. Tin Foil Boat Experiments to Test with Kids After all of our talk about history and investigating the coins themselves, it was time to get down to experimenting. The posts (here , here , here) show two pictures, one of hard-boiled eggs and the other of eggs wrapped in foil with the caption "Tip: wrap your eggs in aluminum foil and microwave for 2 minutes . (Or did preheating dry up the tiny bit of water inside each kernel, so it would not pop. Remove the kernels from the oven and allow them to cool. Office of Disease Prevention and Health Promotion. (Elizabeth Withey/CBC) comments There's a. Just making four equally spaced folds helps measure where to staple later on. First, prepare the high moisture popcorn. Popcorn is scientifically known as Zea mays everta. Science with Shields: Episode #75 Sink or Float Aluminium Foil Edition Fill your bowl track of water. 1. Tin-Foil Boats Fill a large basin with water, then cut a piece of tin foil that is 5 inches by 6 inches. The Mason Jar Scientist: 30 Jarring STEAM-Based Projects, MARATHON Adanac 3000 Digital Sports Stopwatch Timer with Extra Large Display and Buttons, Water Resistant- Yellow, Ball Regular Mouth Mason Jars with Lids and Bands, 16-Ounces (4-Pack), Barbasol Soothing Aloe Thick & Rich Shaving Cream 10 Oz (2 Pack), Alka-Seltzer PFY BXAS50 80659297 Antacid and Pain Relief Medicine, Two-Pack (Pack of 50), Kadaon 10X Handheld Magnifier Antique Mahogany Handle Magnifier Reading Magnifying Glass for Reading Book, Inspection, Coins, Insects, Rocks, Map, Crossword Puzzle, BORAX 20 Mule Team Laundry Booster, Powder, 4 Pounds, Fine Ground Celtic Sea Salt (1) 16 Ounce Resealable Bag of Nutritious, Classic Sea Salt, Great for Cooking, Baking, Pickling, Finishing and More, Pantry-Friendly, Gluten-Free, McCormick Assorted Food Color, 1 Fl Oz (Pack of 1), Food Coloring 12 Color Vibrant Cake Food Coloring Set for Baking, Decorating, Fondant and Cooking Upgraded Liquid Concentrated Icing Food Color Dye for Slime Making, DIY Crafts .25 fl. The small can of water is attached to a dowel supported by the opening of the larger can. Quick & simple activities for toddlers and preschoolers to do at home with tin foil! Gladz Avenue 1.97K subscribers Join Subscribe 5.2K views 1 year ago #gladzavenue Popcorn (popped corn, popcorns or pop-corn) is a variety of corn kernel which expands and puffs up when heated;. This is the same reason we have wind! Take the inflated balloon and rub it on your hair to charge the balloon with negatively charged electrons. Struggling Students? summarize the results of the experiments in a written conclusion. After heating, the kids performed a taste test and a kernel test to determine the best way to cook popcorn. Write to us at. Pour 100 milliliters of the drain cleaner into the glass bottle. You even can use its chemical properties to fuel a device that will produce and collect powerful combustible gases. evaporating dish, 250mL beaker, 100mL beaker (2), watch glass, aluminum foil, Orville Redenbacher popcorn (unpopped), unknown Brand X popcorn (unpopped). When the popcorn is done, count how many of the 100 seeds popped and how many did not pop. If you want an extra long tail, make the long pieces about three feet in length. All rights reserved. You can present to students a simple experiment to prove that moisture is inside popcorn kernels. Reproduction of material from this website without written permission is strictly prohibited. Be smart: plan ahead and conduct your experiment over several nights. Responsibility disclaimer and privacy policy | About us | Our mission | Site Map, The most important scientific discoveries of 2022. This project will give you a chance to learn about how much energy your cells can extract from different types of food. Create a Tin Foil Craft Canvas. Brown paper (from a grocery bag) or construction paper Glue Scissors Crayons or markers Instructions 1. Use water, oil, or vinegar. What is it you can measure? Basic understanding of chemical reactions is helpful, A kit for this project is available from our partner. Popcorn pops because each kernel has a tiny bit of water inside it. Try the following if you have trouble keeping the fire alive in the calorimeter: Some food items might keep burning when they were put in the calorimeter just smoldering, but others will need a real flame to keep the burning active in the calorimeter. Andrew is an avid photographer, who enjoys blending science and art in his work. Popcorn differs from other types of corn in that its hull has just the right thickness to allow it to burst open. January 14, 2020. The hot foil trick is a magic trick in which the magician places a small piece of tin or aluminium foil in a volunteer's hand, and the foil begins to rapidly increase in temperature until the volunteer has to drop it to avoid scalding their hand, and the foil is reduced to ashes on the ground. STEAMsational was founded by Brenda MacArthur in 2011 and has provided science experiments for kids to thousands of children around the world. Scrunch up this piece into one long piece for . The foil hack is compatible with any stovetop popcorn routine; all you have to do is swap out your usual pot lid for a sheet of foil. As explained in the. If their hypothesis was incorrect, have them record what they learned. Try this practical or demonstration to illustrate the displacement of copper from copper sulfate using aluminium foil, with kit list and safety instructions. Pick up the small can. As you are doing your background research on this project, try to find out about other measures of a balanced diet in addition to food energy. Which Brand of Microwave Popcorn Pops Fastest? It. Did you make this project? Fold the foil over the popcorn and oil. All Right Reserved. and Thank you for watching I hope its. A cork at the bottom of the large can is used to hold burning food underneath the smaller can. Place the bag's contents in aluminum foil. Because the tin foil completes a circuit between both ends of the battery and the base of the bulb, the bulb will light. Because the foil is so light and is balancing on the end of the skewer, it moves easily, spinning as the warmer air moves past it. If you have any comments (positive or negative) related to purchases you've made for science projects from recommendations on our site, please let us know. Reynold's says a reaction happens when aluminum foil comes in contact with salt, vinegar, highly acidic foods such as tomatoes or highly spiced foods. Place the aluminum pie pan on a heat resistant surface. If initially the temperature of the water is 20.0C, and after burning the nuts in the calorimeter we measure a water temperature of 33.3C, then the change in temperature of the water (Tf - Ti) equals 13.3C, and the heat captured by the calorimeter Qwater is (150g 0.001Cal/(g C) 13.3C) or 2.0Cal.
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