Which is necessary for a chemical reaction to occur?
A) Reactant molecules must collide.
B) Collisions must be of a certain energy.
C) neither a nor b
D) both a and b
Correct Answer:
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Q5: According to the second law of thermodynamics,
A)
Q6: What is the molar mass of H2SO4?
A)
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Q11: Exhibit 8-1
For the following questions, consider
Q12: In all chemical changes,
A) reactants disappear completely.
B)
Q13: According to the first law of thermodynamics,
A)
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