Assuming no calorie intake from water or minerals, if a 100 gram steak contains 49% water, 15% protein, 0% carbohydrates, and 36% fat, what is the estimated gross energy content of the steak (in kcal)? For every 3500 Cal consumed but not burned up through activity, roughly 1 pound of body fat is produced. If no energy is burned up during the eating of steak, how many pounds of body fat are stored?

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1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

How many neutrons does a atom of cobalt have?