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Old 03-20-2005, 11:01 PM   #1
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A quick question about Calories

Well I was reading something, and it mentioned 'Food Calories.' It said that when something in food, let's say it said 200 calories per serving, actually means 200 Kcal. I'm just wondering if this is true, and if so, does this also apply to BMR. Say if I needed 2000 Cal to function, would that actually mean 2000 Kcal? Sorry if this was asked before but now I am just confused. I know fat is about 9kcals/g but does that also mean 9 cal/g?

 
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Old 03-21-2005, 08:46 AM   #2
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Re: A quick question about Calories

The terms are the same and interchangable. I believe the K stands for Kelvin, which is the measurement of the temperature it takes to burn a calorie.
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Old 03-21-2005, 10:51 PM   #3
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Re: A quick question about Calories

I thought K was kilo, as in Kilocalorie :/

 
Old 03-21-2005, 11:32 PM   #4
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Re: A quick question about Calories

It is kilo. Kelvins are super hot temperatures.
A calorie is the amount of heat required to raise one gram of water, one degree Celcius. The kcal is the amount of heat required to raise the temperature of one kilogram of water one degree Celcius.
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Old 03-22-2005, 03:52 AM   #5
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Re: A quick question about Calories

Really doesn't matter if it is Kelvin or Celsius scale. Degrees Kelvin are based on Celsius increments but have different boiling points/freezing points. If I remember correctly, water boils at 373 Kevin and freezes at 273 Kelvin. Just like degrees Celsius, there is 100 degrees seapating both points.

 
Old 03-22-2005, 11:40 AM   #6
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Re: A quick question about Calories

I know, but Kelvins are usually only referred to when getting into the hotter temperatures (as in "color temperature") since its base startes at absolute zero rather than freezing point. Way off topic.
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Old 03-23-2005, 01:04 PM   #7
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Re: A quick question about Calories

Kelvin is used for higher temps mainly because they are being referred to in a mor scientific way

0 degrees Kelvin is absolute zero, which is about -273 degrees C I think (So Kelvin is just degrees C + 273)

But yeah Calorie = Kcal = the amount of energy needed to heat 1 litre of water by 1 degree (K or C as they are the same increments)

 
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