2021-2022 Review HW For Two Step Mole Calculation, Molarity And Naming Molecular Compounds

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Part I Please write the appropriate chemical formula or chemical name for the following.

a) Trichlorine octabromide

b) N₂Cl₅

c) Chemical formula for elemental Bromine

d) Silicon monophosphide

e) Br₇S₉

Part II 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?

Answer:
Part I : Will give in class

Part II :
a. 75.1g Cl₂ @STP
b. 8.19E23 molecules H₂O
c. 6.51E22 f.u. Al₁Cl₃
d. 130L (or 1.3E2L) N₂ @STP
e. 34.9g Na₂(CO₃)₁