Calorimetry Calculations (2020-2021)

You are burning a food sample of peanuts.

Use the measurements below to calculate the amount of food calories found in the peanuts using a calorimeter.

Weight of empty can: 13.74 grams

Weight of can with 125 ml of water: 98.30 grams

minimum temperature of water: 20.31 degrees celsius

maximum temperature of water: 30.46 degrees celsius

Initial mass of food: 1.03 grams

final mass of food: 0.13 grams

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In graph provided, 3 patients were asked to come in for a doctors visit to have their glucose tolerance test (GTT) conducted to test for diabetes. Each patient was asked to fast (not eat) for 12 hours prior to the appointment. Their initial glucose levels were taken and then they immediately drank a sugary drink that "should" have spiked their glucose levels. If their glucose levels dropped, what would that have indicated?

• That they did not have functioning insulin receptors

• That their beta cells within their pancreas were not producing adequate insulin

• That their insulin receptors were connecting to insulin, allowing a channel protein to open

• There is not enough information to determine

Looking at the graphic provide, which of the following is true?

• All patients are diabetics

• All patients are normal

• Anna & Patient A are not diabetics

• There is not enough information to determine

Using ONLY the ranges of (0 min - 90 min), which of the following is true?

• Anna & Patient A are likely Type 1 diabetics

• Anna & Patient A are likely Type 2 diabetics

• Patient B is the only one who is likely a diabetic

• All patients are likely type 1 diabetics

You are conducting a calorimetry experiment for a major food company. Your job is to conduct "quality control" to ensure that the food company's chemist have calculated the correct amount of calories in each of their bags of chips.

A serving size is 28 grams and contains 160 calories

You weigh 1 chip and is weighs 1.5 grams

How many (approximate) chips are in a serving size

• 18.6 chips

• 8.6 chips

• 25.2 chips

• 28 chips

Serving size (28 grams) = 160 calories

Calculate the number of "food" calories that would be in 1.5 grams of the food

(THIS IS THE NUMBER OF CALORIES YOU "SHOULD" BE SEEING IN THE CALORIMETY EXPERIMENT IF YOUR CALORIMETER WAS SET UP CORRECT)

REMEMBER THIS NUMBER FOR THE NEXT QUESTION.

• 8.6 calories

• 2 calories

• 1 calorie

• 160 calories

Using the number of "food" calories in the previous question (8.6 calories in each chip weighed 1.5 grams), calculate how far off the calorimetry experiment was from what IT SHOULD HAVE BEEN in calories.

Measurements:

Mass of H20 = 61.3

Change in Temp = 18 degrees celsius

Change in food = 1.3 grams

HINT: calculate the number of calories the experimenters found in their calorimetry experiment. It should have been 8.6 calories.

• The experiment calculated "food" calories were only .002615 and not even close to what they should have been

• The experiment calculated "food" calories were 2.615 food calories and were pretty close

What is the role of Glucagon?

• To shift a persons blood from being a hypo-glycemic environment to more of a hyper-glycemic environment

• To shift a persons blood from being a hyper-glycemic environment to more of a hypo-glycemic environment