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91008Lecture_7
Course: FCH 150, Fall 2008School: Syracuse
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Word Count: 210
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Workshops Announcements will start next week. Look for sign-ups tomorrow Service Learning Sign-ups Sophomores see menot requiredbut if you are interested. Graduate Reviews tonight.#2 in book. Compounds Bonding Ionic Bonding Covalent Bonding Compounds Formula Ratio of elements in a compound 3 kinds (empirical, molecular, structural) Molecular masses from chemical formulae Compounds Naming Cation...
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Coursehero >> New York >> Syracuse >> FCH 150Course Hero has millions of student submitted documents similar to the one
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Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
Workshops Announcements
will start next week.
Look for sign-ups tomorrow
Service Learning Sign-ups
Sophomores see menot requiredbut if you are interested.
Graduate Reviews tonight.#2 in book.
Compounds
Bonding Ionic Bonding Covalent Bonding
Compounds
Formula
Ratio of elements in a compound 3 kinds (empirical, molecular, structural) Molecular masses from chemical formulae
Compounds
Naming
Cation 1st by name, Anion change suffix to -ide Use di, tri, tetra to indicate how many atoms of one type present Polyatomic ions - page 54 - must know!
Lets Practice
CaO Calcium hydroxide CaCO3 SiO2 MgBr2 Phosphorus pentafluoride
Percent Composition
Molecular Formula Calculate Molecular Mass Divide atom the mass by the Molecular Mass Multiply by 100
Lets Practice
Phosphorus tribromide (% bromide) Magnesium Chloride (% chloride) Iron (III) chloride (% iron) C5H12O (% C, % H, %O)
How about the reverse?
Yes, but a bit more complicated! Empirical Formula Molecular Formula
What is the Empirical formula of a compound made of Phosphorus and Chlorine that is 77.45 % Chlorine?
% to mass Mass to moles. Divide by small. Multiply till whole.
How about the reverse?
Yes, but a bit more complicated! Empirical Formula Molecular Formula
What is the Empirical formula of a compound made of Phosphorus and Chlorine that is 77.45 % Chlorine? If the Molecular Mass is 137.3327 g/mol, what is the Molecular Formula?
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