Chemistry, 25.01.2022 02:40 AnxiousKid
HELP!!! How much heat is required to change 40 g of ice (H2O) at 225 K to vapor (steam) at 387K?
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Chemistry, 22.06.2019 06:00
Compare and contrast physical changes with chemical changes.
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Chemistry, 22.06.2019 21:40
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.
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Chemistry, 22.06.2019 23:30
Match each statement with the state of matter it describes
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How much heat is required to change 40 g of ice (H2O) at 225 K to vapor (steam) at 387K?...
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