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Category > Chemistry Posted 17 Nov 2017 My Price 10.00

needing answer to question number 13

I am needing answer to question number 13. It is in the powerpoint.

 

6.3 POGIL- properties of water81
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1-How many hydrogen atoms are in a molecule of water?-1 -2-32-How many oxygen atoms are in a molecule of water?-1 -2-33- What holds the hydrogen atoms to the oxygen atom?-hydrogen bond-covalent bond-ionic bond6.3 POGIL- MODEL 1
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4-The shading around the molecule represents therelative density of electrons shared by the atoms.What does this indicate about the density of electronsaround the oxygen atom as compared to the density ofelectrons around the hydrogen atoms?-electrons more dense around oxygen atom than aroundhydrogen atom-LABEL the water molecule’s positive and negative charge6.3 POGIL-
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5-DETERMINE where is the majority of negative charge onthe water molecule?-oxygen-EXPLAIN why there are more e- around oxygen.-oxygen atomic # 8 / 6 valence electrons-hydrogen atomic #1 / 1 valence electron6.3 POGIL-
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-LIST: 4 Properties of waterExcellent solvent for ionic and polar molecules due todipole nature-adhesive, -cohesiveSurface tension- very highHigh Heat of fusionHigh Heat of vaporization- highest knownDensity- maximum density at 4oC not at freezing expandsupon freezingUnusually Melting and Boiling Points6.3 POGIL- [6.3 RDG]
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6.3 POGIL- MODEL 2-Attraction of Water Molecules6-Looking at your answers to question 1 and 2 from Model1, tell what atoms are represented by:-The small un-shaded circles in Model 2-The larger gray shaded circles in Model 27-What do the solid lines between the small and largecircles represent?8-According to Model 2, what is represented by the dottedlines?hydrogenoxygencovalentbondsweak attraction – H
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6.3 POGIL- MODEL 2-Attraction of Water Molecules9-Remember that electrons in a water molecule are moredense around the oxygen atom and less dense around thehydrogen atoms.a-What kind of charge would the oxygen atom havecompared to thehydrogen atoms? ___________b-What kind of charge would the hydrogen atom havecompared tothe oxygen atoms? ___________10-DESCRIBE the arrangement of the water molecules inModel 2 with one another.(-) NEGATIVE(+) POSITIVEH atom is ATTRACTED toO atom of water molecule
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6.3 POGIL- MODEL 2-Attraction of Water Molecules11-DESCRIBE the cause of the attractions betweenmolecules of water.-opposite charges attract
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6.3 POGIL- MODEL 2-Attraction of Water Molecules12-If another water molecule was added to the group inModel 2 at the upper right side, which of its atoms wouldbe connected to the existing molecule with a dotted line?DRAW the molecule and bond.EXPLAIN your group’s reasoning:H + charge in new molecule is attractedtoO – charge in existing molecule
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6.3 POGIL- MODEL 2-Attraction of Water Molecules13-DRAW 10 water molecules below to create a cluster.-INDICATE the hydrogen bonds that link the watermolecules.
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6.3 POGIL- MODEL 2-Attraction of Water Molecules14-Some examples of nonpolar molecules include fats,oils, and waxes.DETERMINE how do these substances interact withwater?15-What prediction would you make about why oil andwater interact in the way described above?-they don’t interact with water-they separate w/o intermixing with water-water molecules attracted to other watermolecules-NOT attracted to oil / push oil out as pack tightlytogether
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16-Other polar molecules include nucleic acids and someproteins. Look at the DNA sketch provided and predicthow the two strands are attracted to one another.17-Some molecules that are covalently bonded do nothave a diference in charge across the molecule. Thesemolecules are reFerred to as nonpolar. Whatarrangement oF electrons would result in a nonpolarmolecule?6.3 POGIL- MODEL 3-Model oF DNA Molecule-one strand slightly positive area-one strand slightly negative area-even distribution of electrons
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16-Other polar molecules include nucleic acids and someproteins. Look at the DNA sketch provided and predicthow the two strands are attracted to one another.17-Some molecules that are covalently bonded do nothave a diference in charge across the molecule. Thesemolecules are reFerred to as nonpolar. Whatarrangement oF electrons would result in a nonpolarmolecule?6.3 POGIL- MODEL 3-Model oF DNA Molecule-one strand slightly positive area-one strand slightly negative area-even distribution of electrons
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Inquiry lab relatng bondingIf I Take 2000mL condensed (dehydraTed lacTose wiTh addedsucrose) subsTanceAnd add To This wiTh strring 250 mL of a ?M soluton of ciTricacid soluton (WhaT is The molariTy of C6H8O7in commerciallyavailable ciTric acid soluton if 16.98 mL of 1.594 M NaOH isrequired? MaVa=MbVbwhen They have same valence)How much is required To produce 50 ml of This soluton?±his soluton may be eaTen wiTh a spoon or cracker…Why did The soluton become solid?
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Status NEW Posted 17 Nov 2017 01:11 AM My Price 10.00

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