CHEM 3: Nomenclature, The Concept of a Mole and Avogadro’s Number
1.
MARK ALL THAT APPLY: Which substances below are IONIC compounds?
C6H12O6
Co2O3
N2O4
NH3
NH4Cl
C6H6
Br2
Mg3(PO4)2
2.
Name the compound below following rules for nomenclature:
Co(OH)2
3.
Name the compound below following rules for nomenclature:
Mn2O7
4.
Name the compound below following rules for nomenclature:
Pb(SO3)2
5.
MARK ALL THAT APPLY: Which substances below are covalent compounds?
6.
NH4Cl
NO2
NaN3
CH3CH2OH
P4O10
Li2CO3
Ba(NO2)2
Name the compound below following the rules for nomenclature:
N2O5
7.
Name the compound below following the rules for nomenclature:
P4S6
8.
C2O
Name the compound below following the rules for nomenclature:
9.
Cobalt (II) orthosilicate has the formula Co2SiO4 and has been used as an electrode material for
rechargeable lithium ion batteries. Based on this information, predict the formula for cobalt (III)
orthosilicate by specifying the subscripts X & Y:
CoX(SiO4)Y
10. How many grams are present in 2.50 moles of magnesium nitrate? Report the final answer in
standard notation with the correct number of significant figures.
11. What is the mass (in grams) of 5.65x1021 molecules of diatomic bromine, Br2? Report the final
answer in standard notation with the correct number of significant figures.
12. How many TOTAL ATOMS are present in 14 mL of liquid ethanol, CH3CH2OH? Assume the density
of CH3CH2OH(l) is 0.789 g/mL. Be sure to report the final answer with the correct number of
significant figures. Report the final answer in proper scientific.