QUESTION 1 In order to determine the percentage of fat in Regular potato chips, a student collected the following data Mass of beaker: 271.468 g Mass of beaker plus chips: 275.995 Mass of beaker plus chips after extraction: 274.501 Based on these data, calculate the mass of the chips to four significant figures and enter it in the space below. DO NOT ENTER UNITS, JUST NUMBERS! QUESTION 2 In order to determine the percentage of fat in Regular potato chips, a student collected the following data M 8 of heaker: 271.468 g​

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.