mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-24 05:21:09 +00:00
cecf43d648
* Pyupgrade to Python 3.9
* updating DIRECTORY.md
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
"""
|
|
Functions useful for doing molecular chemistry:
|
|
* molarity_to_normality
|
|
* moles_to_pressure
|
|
* moles_to_volume
|
|
* pressure_and_volume_to_temperature
|
|
"""
|
|
|
|
|
|
def molarity_to_normality(nfactor: int, moles: float, volume: float) -> float:
|
|
"""
|
|
Convert molarity to normality.
|
|
Volume is taken in litres.
|
|
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Equivalent_concentration
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Molar_concentration
|
|
|
|
>>> molarity_to_normality(2, 3.1, 0.31)
|
|
20
|
|
>>> molarity_to_normality(4, 11.4, 5.7)
|
|
8
|
|
"""
|
|
return round(float(moles / volume) * nfactor)
|
|
|
|
|
|
def moles_to_pressure(volume: float, moles: float, temperature: float) -> float:
|
|
"""
|
|
Convert moles to pressure.
|
|
Ideal gas laws are used.
|
|
Temperature is taken in kelvin.
|
|
Volume is taken in litres.
|
|
Pressure has atm as SI unit.
|
|
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Gas_laws
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Pressure
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Temperature
|
|
|
|
>>> moles_to_pressure(0.82, 3, 300)
|
|
90
|
|
>>> moles_to_pressure(8.2, 5, 200)
|
|
10
|
|
"""
|
|
return round(float((moles * 0.0821 * temperature) / (volume)))
|
|
|
|
|
|
def moles_to_volume(pressure: float, moles: float, temperature: float) -> float:
|
|
"""
|
|
Convert moles to volume.
|
|
Ideal gas laws are used.
|
|
Temperature is taken in kelvin.
|
|
Volume is taken in litres.
|
|
Pressure has atm as SI unit.
|
|
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Gas_laws
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Pressure
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Temperature
|
|
|
|
>>> moles_to_volume(0.82, 3, 300)
|
|
90
|
|
>>> moles_to_volume(8.2, 5, 200)
|
|
10
|
|
"""
|
|
return round(float((moles * 0.0821 * temperature) / (pressure)))
|
|
|
|
|
|
def pressure_and_volume_to_temperature(
|
|
pressure: float, moles: float, volume: float
|
|
) -> float:
|
|
"""
|
|
Convert pressure and volume to temperature.
|
|
Ideal gas laws are used.
|
|
Temperature is taken in kelvin.
|
|
Volume is taken in litres.
|
|
Pressure has atm as SI unit.
|
|
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Gas_laws
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Pressure
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Temperature
|
|
|
|
>>> pressure_and_volume_to_temperature(0.82, 1, 2)
|
|
20
|
|
>>> pressure_and_volume_to_temperature(8.2, 5, 3)
|
|
60
|
|
"""
|
|
return round(float((pressure * volume) / (0.0821 * moles)))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
import doctest
|
|
|
|
doctest.testmod()
|