Recent content by slana2920

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    chemistry question; How many joules of nutritional energy are in chips?

    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 14600jK of excess nutritional energy consumed, how many bags of chips contain enough nutritional energy to result in 1lb of body fat? ... how do you do this...
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    what is the "+/-" value.. Chemistry lab help.?

    This is pertaining to a lab that i did with measuring the density of a saline solution. I measured this using a graduated cylinder and a volumetric pipette... i want to know : based on the +/- values on the graduated cylinder (0.1mL) or the volumetric pipette (0.01mL), which SHOULD be "better"...
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    Chemistry help-- recrystallization process?

    My normal chemhelper.com website is down right now, so if anyone knows anything about this i`de greatly appreciate any help: 1.What physical property does the recrystallization process use to separate the different chemical components of a mixture? 2. list the 5 basic steps in the...
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