This 10-item test will measure how well you understood the rules in writing down the correct chemical formulas of compounds. You have 5 minutes to complete the test. Identify the correct chemical formula of the given compound. Tick the letter that corresponds to your answer. *Numbers in the chemical formulas are supposed to be treated as subscripts.
KMnO5
KMnO4
KMnO3
KMnO2
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HClO4
HClO
HClO3
HCl
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CaCl4
CCl4
Ca4Cl
C4Cl
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Al(OH)3
Al(OH)2
AlOH
AlO
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NH4C2H3O2
NH4(C2H3O2)2
(NH4)2C2H3O2
(NH4)2(C2H3O2)2
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CuO
Cu2O
CuO2
Cu2O2
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NaClO4
NaClO3
NaClO2
NaClO
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Cu2SO4 . 5H2O
CuSO . 5H2O
CuSO4 . 5H2O
Cu2(SO4)2 .5H2O
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H2SO4
H2SO5
H2SO3
H2SO2
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