Chemistry, 05.05.2020 11:48 aceccardi03
Look at the following diagram of the carbon cycle.
Which of the following facts is best represented by the arrow pointing from G to C?
A. The chemical energy present in fossil fuels is used to create new forms of energy used for photosynthesis.
B. Energy is conserved because the chemical energy present in fossil fuels is used up completely during burning.
C. The mechanical energy produced on burning fossil fuels is transformed into chemical energy stored in carbon dioxide.
D. Energy is conserved because the mechanical energy produced on burning fossil fuels is less than the chemical energy formed.
Answers: 3
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The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.
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What are the similarities between compounds and mixtures?
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Look at the following diagram of the carbon cycle.
Which of the following facts is best repres...
Which of the following facts is best repres...
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