Chemistry, 07.05.2020 03:00 avlenlestrade
23 grams of sodium reacts with 293 cm 3 if water that is initially at 298 K. It produces an enthalpy change of 197 kj. What is the final temperature of the water? The specific heat capacity of water is 4.18 j/k g.
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The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true
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What is a difference between a mixture of elements and a mixture of compounds
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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.
Answers: 2
23 grams of sodium reacts with 293 cm 3 if water that is initially at 298 K. It produces an enthalpy...
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