Most of the coal that exists today was formed ________ years ago.
A) 100
B) 1000
C) 1 million
D) over 300 million
Correct Answer:
Verified
Q39: Fuels are _ forms of matter.
A)oxidized
B)reduced
C)acidic
D)basic
Q40: Which physical state has the lowest entropy?
A)solid
B)liquid
C)gas
D)All
Q41: Which of the following is NOT a
Q42: Given the following analysis of coal samples,which
Q43: The most abundant fossil fuel in the
Q45: Coal can be cleaned before it is
Q46: The United States is estimated to have
Q47: The primary element in coal is
A)carbon.
B)silicon.
C)oxygen.
D)chlorine.
Q48: The highest grade of coal is
A)anthracite.
B)bituminous.
C)lignite.
D)peat.
Q49: A substance that burns readily and releases
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