conversion problems to help

# conversion problems to help - atom is twice that or 278 pm...

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he following conversion factors can be used: 1 L = 1000 cm 3 1 microliter = 10 -6 L Then using dimensional analysis: 1.05E-23 cm 3 1 L 1 microliter = 1.05E-20 microliters 1000 cm 3 10 -6 L Feedback: An isolated platinum atom is taken to be a sphere with a radius of 139 pm. Therefore the diameter of the atom is twice that or 278 pm. A picometer is 10 -12 meters ( 1 pm = 10 -12 m). The diameter of the atom in meters is therefore 278 pm 10 -12 m = 2.78E-10 m pm 4.18 mm is 4.18E-3 meters. 4.18 mm 10 -3 m = 4.18E-3 m mm Dividing the total distance by the distance spanned per atom gives the number of atoms needed: 4.18E-3 m atom = 1.50E+7 atoms 2.78E-10 m Feedback: An isolated platinum atom is taken to be a sphere with a radius of 139 pm. Therefore the diameter of the

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Unformatted text preview: atom is twice that or 278 pm. A picometer is 10-12 meters ( 1 pm = 10-12 m). The diameter of the atom in meters is therefore 278 pm 10-12 m = 2.78E-10 m pm 1.17 mm is 1.17E-3 meters. 1.17 mm 10-3 m = 1.17E-3 m mm Dividing the total distance by the distance spanned per atom gives the number of atoms needed: 1.17E-3 m atom = 4.21E+6 atoms 2.78E-10 m The volume of a single palladium atom is 1.08E-23 cm 3 . What is the volume of a palladium atom in microliters? 1.08E-20 microliters Feedback: The following conversion factors can be used: 1 L = 1000 cm 3 1 microliter = 10-6 L Then using dimensional analysis: 1.08E-23 cm 3 1 L 1 microliter = 1.08E-20 microliters 1000 cm 3 10-6 L...
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## This note was uploaded on 02/10/2009 for the course CHEMISTRY 105 taught by Professor Brozak during the Spring '09 term at Washington State University .

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conversion problems to help - atom is twice that or 278 pm...

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