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Results tagged with physical-chemistry
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user 4400
The study of chemical systems using the laws and concepts of physics. This usually requires the techniques of thermodynamics, statistical mechanics and quantum mechanics.
7
votes
2
answers
925
views
Carbon dating: What to compare the new value against?
Formula for calculating age by using carbon-14 (source: HowStuffWorks)
$$
t = \frac{\ln (N_\mathrm f/N_\mathrm o)}{-0.693}t_{1/2}
$$
The page doesn't explain what the $-0.693$ represents. What is $-0. …
- 197
0
votes
1
answer
104
views
Z:#Neutrons Ratio
Is there a fixed ratio that can be used to calculate the number of neutrons in the nucleus of the most stable isotope of an element by knowing the atomic number?
Side question: if Z is the symbol for …
- 197