Scientific method
Explanation:
The scientific method is the name of the process scientists use to gain knowledge about the physical world.
The scientific method is a systematic approach into the study of nature. It follows the following processes:
- Detailed observation
- Asking of question
- Formulation of hypothesis
- Experimentation
- Analysis and interpretation
- Conclusion
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The best answer would be answer B. "the atom has a cloud of positive charge....."
Answer: 438 K
Explanation:
According to Gibbs equation:
= Gibb's free energy change
= enthalpy change = 20.1 kJ/mol = 20100 J/mol
T = temperature
= entropy change = 45.9 J/Kmol
A reaction is at equilibrium when = Gibb's free energy change is zero and becomes spontaneous when = Gibb's free energy change is negative.
T=437.9K
Thus the temperature at which the reaction change from nonspontaneous to spontaneous in the forward direction is 438 K
Explanation:
Rotting, withering, heat and light emission, precipitate formation, gas evolution, or a change of appearance.