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Vocabulary
Compound Formulas/Names
Polyatomic Ions
Oxidation Numbers
Determining/ Using Chemical Formulas
100
What is a monatomic ion?
An ion formed from a single atom.
100
What is the chemical formula for dinitrogen pentoxide?
N2O5
100
What is the name of the ion ClO-1?
hypochlorite
100
Determine the oxidation numbers in iron(III) oxide.
Iron=+3 Oxygen=-2.
100
Find the molar mass of FeCl3.
162.2 g/mol
200
What is an oxyanion?
A polyatomic ion that contains oxygen.
200
What is the name of the compound K2CO3?
potassium carbonate
200
What is the name of the ion Cr2O7 -2?
dichromate
200
What is the oxidation number of each element in magnesium bromide?
Magnesium=+2 Bromine= -1.
200
How many moles are in 98.3 grams of aluminum hydroxide?
1.26 moles Al(OH)3
300
What is the definition of formula mass?
The formula mass of any molecule, formula unit, or ion is the sum of the average atomic masses of all atoms represented in its formula.
300
What is the name of the compound tin(IV) oxide?
SnO2
300
What is the name of the ion ClO4 -1?
perchlorate
300
What is the oxidation number of each element in chlorous acid.
Hydrogen=+1 Chlorine=+3 Oxygen= -2.
300
Find the percentage composition of N2S2.
N: 30.4% S: 69.6%
400
What are used to indicate the general distribution of electrons among the bonded atoms in a molecular compound or polyatomic ion?
Oxidation numbers/Oxidation states.
400
What is the name of the compound Cd(MnO4)2?
cadmium permanganate
400
What is the name of MnO4 -1?
Permanganate
400
What is the oxidation number of each element in aluminum nitride?
Aluminum=+3 Nitrogen=-3.
400
Find the empirical formula of a compound composed of 68.4% Cr and 31.6% O.
Cr2O3
500

What does an empirical formula consist of?

An empirical formula consists of the symbols for the elements combined in a compound, with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound.

500
What is the name of the compound (NH4)3PO4?
Ammonium phosphate
500
What is the chemical formula of phosphite?
PO3 -3
500
What is the oxidation number of each element in the compound boron triiodide.
Boron=+3 Iodine= -1.
500
If the percent composition is the following, then what is the empirical and molecular formula? C=34.95% H=6.844% O=46.56% N=13.59%
C3H7NO3 empirical formula C3H7NO3 molecular formula