2018-2019 Review HW For Naming Molecular Compouds Lewis Dot Structure Percent Composition And Two Step Mole Calculations

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2018-2019 Review HW for Naming Molecular Compounds, Lewis Dot Structures, Percent Composition and Two Step Mole Calculations


Part I Answer the following question in the space provided.

1. _______________ types of elements produces __________ when they lose electrons.


2. _________________ is the base unit of a molecular cpd.


3. Define Rule of Eight (also called Octet Rule):____________________________________

_____________________________________________________________________________________


4a. If C and P atom get close together, they ________________ valence electrons, forming

_____________ and become a ___________________ compound. The ΔEN between these two atoms needs ________ 1.7

4b. There are no atoms of copper in a piece of copper metal (because they have metallic bonds. What two "things" are in this piece of metal,

i) ________________________________________ and ii) _______________________________________


5. Ionic compounds are made up of ______________


Part II Give the correct Lewis Dot Structure(s) for the following:

a. CF4







b. PO33-







c. NO3-1







d. SeBr6







Part III Give the appropriate chemical name or chemical formula for the following:

a. S4Cl9


b. Sulfur trioxide


c. NO2


d. Pentafluorine monochloride



Part IV Answer the following questions showing all work.

a) How many grams in 23.7 liters of chlorine gas (Cl2) @ STP?





















b) How many molecules in 24.5 grams of water?





















c) How many f.u. do I have if I have 14.5grams of aluminum chloride, Al1Cl3























d) How many liters of N2 in 3.4E24 molecules of this gas.
(The element N is not found alone in nature but instead as in two's so it is actually a molecule)





















e. How many grams of Sodium carbonate, Na2(CO3)1, do you need to add to get 452mL of a 0.728M solution?






















f. What is the percent composition of K2(SO3)1? (2019-2020 Honors Student DO NOT DO)

















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