Transcription of Skills Worksheet Problem Solving
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Skills Worksheet Problem Solving
Copyright by Holt, Rinehart and Winston. All rights ChemFile: Problem - Solving Workbook48 Mole ConceptMole ConceptSuppose you want to carry out a reaction that requires combining one atom ofiron with one atom of sulfur. How much iron should you use? How much sulfur?When you look around the lab, there is no device that can count numbers ofatoms. Besides, the merest speck ( g) of iron contains over a billion billionatoms. The same is true of , you do have a way to relate mass and numbers of atoms. One ironatom has a mass of amu, and g of iron contains 137 1023atoms of iron. Likewise, g of sulfur contains 137 1023atoms of sul-fur.
Holt ChemFile: Problem-Solving Workbook 49 Mole Concept Name Class Date Problem Solving continued PROBLEMS INVOLVING ATOMS AND ELEMENTS Sample Problem 1 A chemist has a jar containing 388.2 g of iron filings. How many moles of iron does the jar contain? Solution ANALYZE What is given in the problem? mass of iron in grams
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