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Chemistry

OpenStudy (anonymous):

Alexandra decides to climb Mt. Krumpett, which is 5000 high. She determines that this will crave a full of 1350 of energy for the trip. For her food supply, she decides to have nutrition bars. The label states that each bar contains 50 of carbohydrates, 10 of fat, and forty of protein. How many Nutrition Bars does she demand?

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OpenStudy (aaronq):

are the units from the diet bar in grams?

OpenStudy (aaronq):

too, what are the units of energy? k/cal or kJ?

OpenStudy (anonymous):

yep they are in grams and the energy units are g/cal

OpenStudy (aaronq):

oh pitiful, i didn’t come across your answer. so carbs and proteins 4 cal /k and fats 9cal/thousand so y’all need 1350 kcal = 1350000 cal .. so each bar has 50g carbs ..fifty(iv) = 200 cal 40 g poly peptide.. 40(4) = 160 cal 10g fat .. nine(10) = ninety cal 1 bar = 450 cal split up the free energy you need by the energy per bar 1350000 cal/450 cal = 3000 bars

OpenStudy (anonymous):

Thanks sooo much for walking it out step by step for me!!! This helped sooo much!!! Thanks!

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OpenStudy (aaronq):

no prob !

OpenStudy (aaronq):

skilful luck conveying 3000 bars though haha

OpenStudy (bearding):

Haha that would exist a heck of a back pack!

OpenStudy (aaronq):

HA

OpenStudy (xishem):

I believe there’s an error in calculations here. From what I understand, 1g of carbohydrates has 4kcals of energy, instead of 4cals of energy that was used in the calculation. Recall about the answer that was gotten compared to what the average number of Calories every person needs per day to function normally. I recollect the average is effectually 2200 Calories (with a capital ‘C’). This is food calories, which is the same as a kcal. one Calorie = 1kcal = 1 food calorie = chiliad calories This trip requires 1350 kcal (food calories), which is but over half of what the normal human being being needs to office normally. Exercise you lot have to consume 6000 diet confined each twenty-four hours to part unremarkably? Does that even brand sense? Non actually. I retrieve the more reasonable answer is 3 free energy bars.

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OpenStudy (aaronq):

@Xishem nope carbohydrates have ~iv calories per gram look it up. maybe information technology she meant 1350 calories equally well but thats very little free energy to climb a mountain

OpenStudy (xishem):

http://en.wikipedia.org/wiki/Food_energy This is showing that information technology’south 4kcals/g. Commonly, the general public is pretty lax on how they represent food calories (kcals) versus regular calories.

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## Alexandra Decides to Climb Mt Krumpett

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