Which of the following statements is true?
A.
Some chemical reactions rele...
Which of the following statements is true?
A.
Some chemical reactions release energy, but no chemical reaction can absorb energy.
B.
Some chemical reactions absorb energy, but no chemical reaction can release energy.
C.
Chemical reactions, by definition, cannot absorb or release energy.
D.
Some chemical reactions release energy, and other chemical reactions absorb energy.
Answers: 2
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Calculate the number of molecules present in 0.750 mol of mgo.
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Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
Answers: 1
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Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules
Answers: 1
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