Units and Measurements

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Department
Chemistry & Chemical Biology
Course
CHEM 1211
Professor
Toher
Semester
Fall

Description
Units & Measurements Part I • One Metric prefix differs from another by a power of 10 • Most common units: milli-, micro-, nano-, pico-, kilo-, mega-, centi- • Metric system: promotes communication across nations • Question of the magnitude of scale: o CGS system: based on smaller scale: centimeter, gram, second o MKS system: based on larger scale: meter, kilogram, second International units for weights/measurements: meter, kilogram, second, ampere, kelvin, mole International System of Units (SI Units): MKS provided foundation Dimensional Analysis Given Unit (desired unit / given unit) = desired unit Write the given unit  multiply by a fraction relating given unit to desired unit Accuracy vs
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