Answer:
a chemical change is usually an irreversible chemical reaction. an example of this is rusting.
a physical change is usually visible while a chemical change isn't. also, a chemical change is irreversible while a physical change is.
Explanation:
Answer:
Both are at the side of the spectrum that has the lowest frequency.
Explanation:
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Answer:
Temperature and Heat Temperature is the measure of the thermal energy of a substance. The hotter an object, the greater the motion of its particles, and the greater the thermal energy. Heat is the transfer or exchange of thermal energy caused by a temperature difference.
Explanation:
Answer:
a)
b)
Explanation:
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a) In this case, for this kinetics problem, we can consider the temperature-dependent Arrhenius equation:
In such a way, for the given temperatures and rate constant, we compute the activation energy as follows:
b) In this case, we use the previously computed activation energy in order to compute the rate constant at the asked 17°C:
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