Calculate the number of calories in your food using theĮquation below.Important: Each of the following measurements needs to be taken Mass of water in the can (kg) Convert from grams Hint: there are 1000g in a kilogram Mass of just the water (g) Hint: water = (water+can) - empty can) If you like, you can do your calculations using this pre-built Excel spreadsheet. Results (Part A): Fill in the following table while doing When finished, clean up and analyze your data.You can re-use the water in the can, but need to record the new starting and ending temperatures. Repeat the procedure with the second food item. Record the highest temperature reached by the water.(Hint: You may need to rotate the food item to keep it lit, and it will burn more cleanly if the tip of the flame is just below the can, but the food must burn on its own.you can't keep the lighter lit or you will be measuring the calories of the gas in the lighter.) Carefully impale the food item on the probe, ignite it with the lighter, and then hold it directly under the can until it burns itself out and won't re-light.Set the can on the stand with the thermometer in it (careful not to knock it over it may be a bit wobbly), and place a piece of foil or a small aluminum tray under the stand to catch any falling soot.Record the initial temperature of the water in the can.
2.27 LAB EXPRESSION FOR CALORIES BURNED DURING WORKOUT C FULL
Weigh the empty can, then fill it about 1/4 to 1/3 full with water, and weigh it again.Weigh your two food items on an electronic balance sensitive to 0.01 grams.Electronic scale sensitive to 0.01 grams.Lab thermometer ( analog or digital metric/celsius scale preferred).Throughout this exercise, we are always referring to the big C Calorie, also known as the kilocalorie. In chemistry, the big C Calorie is sometimes referred to as a kcal, or kilo-calorie, because it is equal to 1000 "small c" calories.
Note: The Calorie used in diet measurements is a "big C" Calorie.
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