CHEM 219 Module 2 Exam Newest Actual Exam
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what does the term organic mean?
what is an organic compound? - Answer-The term
'organic' is a chemical compound that contains Carbon
and hydrogen.
Organic compounds can exist as chains, branched chains
or rings of carbon atoms with hydrogens attached.
what are hydrocarbons - Answer-The simplest organic
compounds are hydrocarbons. These are molecules that
contain carbon and hydrogen ONLY.
The carbon atoms are joined together with single, double
or triple bonds. Carbon atoms are joined to hydrogen
atoms by single bonds.
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What is the empirical formula? - Answer-An empirical
formula tells you the simplest whole number ratio of the
atoms in a compound.
It can be calculated from experimental data. Sometimes
the empirical formula is the same as the molecular
formula. For example, the empirical formula of methane is
CH4, which is the same as its molecular formula.
However, the empirical formula of ethane is CH3 whereas
its molecular formula is C2H6.
What is the molecular formula - Answer-A molecular
formula counts the actual number of each type of atom
present in a molecule. For example, the molecular formula
of butane is C4H10 and the molecular formula of ethene is
C2H4
The molecular formula tells you nothing about the ways
the atoms are joined together, the structure.
what is the link between the molecular and empirical
formula? - Answer-The molecular formula is a multiple of
the empirical formula. For example if a compound has an
empirical formula of CH2, the molecular formula could be