Find the amount of energy per gram in various types of nuts

In summary, the conversation discusses an experiment where nuts are lit on fire and used to heat up water in an aluminum can. The question is how to find the energy using the equation q=mc delta T. The necessary information for the equation is the mass of water and the specific heat capacity of aluminum. The mass of water used in the experiment was 100g and the mass of the aluminum can was 79.03g.
  • #1
RockenNS42
52
0

Homework Statement



We lit the nuts on fire and used them to heat up the water which was in an aluminum can. We then recorded the temperate. How would I find the energy?

an example of the results would be
cashew
mass of nut before- 1.53g
temp of water before-23C
mass of nut after - .19g
temp of water after- 58C


Homework Equations


q=mc delta T


The Attempt at a Solution



Im really just not sure how to set up the eqaution. I know I use

mc delta T but I am not sure what to do with the mass
 
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  • #2
You need to know the mass of water.
The Equation q = mcT is th energy needed to heat a mass of water 'm' through T kelvin

If you want bonus marks you also need the mass of the aluminium can and 'c' for aluminium.
 
  • #3
As response to the last post, the mass of the wate was 100g and the mass of the can was 79.03
 

1. How do you determine the amount of energy per gram in nuts?

The amount of energy per gram in nuts is determined through a process called calorimetry. This involves burning a small sample of nuts in a controlled environment and measuring the amount of heat produced. The heat produced is then converted to energy units, such as calories or joules, and divided by the mass of the sample to determine the energy per gram.

2. What types of nuts are typically used for this type of experiment?

A variety of nuts can be used for this type of experiment, including almonds, cashews, peanuts, walnuts, and hazelnuts. These are all commonly consumed nuts and have a relatively high energy content, making them suitable for calorimetry experiments.

3. How does the amount of energy per gram in nuts compare to other foods?

Nuts are generally considered to be a high-energy food, with an average of 5-6 calories per gram. This is higher than most fruits and vegetables, but lower than foods like chocolate and processed snacks. However, nuts also contain a variety of nutrients and healthy fats, making them a nutritious choice for a snack or addition to meals.

4. Does the type of processing or roasting affect the amount of energy per gram in nuts?

Yes, the type of processing or roasting can affect the amount of energy per gram in nuts. Roasting can increase the energy content slightly, while processes like blanching or dry roasting can decrease it. However, the differences are usually minimal and not significant enough to impact the overall energy content of nuts.

5. How can the amount of energy per gram in nuts be used in a healthy diet?

The amount of energy per gram in nuts can be used to make informed decisions about portion sizes and incorporating nuts into a balanced and healthy diet. Nuts can be a good source of energy and nutrients, but it's important to keep in mind that they should be consumed in moderation as part of an overall healthy eating pattern.

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