Homework Help: chemistry

Posted by suzy on Tuesday, September 11, 2012 at 11:45pm.

how many joules of nutritional energy are in a bag of chips whose label reads 245 Cal? if 1 lb of fat is stored by the body for each 14.6X10(3) KJ of excess nutritional emergency consumed.how many bags of chips contain enough nutritional energy to result in 1lb of body fat?

chemistry - DrBob222, Tuesday, September 11, 2012 at 11:56pm
245 Cal = 245 kcal = 245,000 calories
1 calorie = 4.184 J; therefore,
245,000 cal x (4.184 J/cal) = ? J.
?J x (1 kJ/1000) x (1 lb/14.6E3) = ?
chemistry - Norrie, Tuesday, September 18, 2012 at 1:54pm
0.0699 rounded to 3 sig figs.

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