diff --git a/physics/ideal_gas_law.py b/physics/ideal_gas_law.py
index b9544d370..f1fa3638a 100644
--- a/physics/ideal_gas_law.py
+++ b/physics/ideal_gas_law.py
@@ -52,6 +52,7 @@ def volume_of_gas_system(moles: float, kelvin: float, pressure: float) -> float:
         raise ValueError("Invalid inputs. Enter positive value.")
     return moles * kelvin * UNIVERSAL_GAS_CONSTANT / pressure
 
+
 def temperature_of_gas_system(moles: float, volume: float, pressure: float) -> float:
     """
     >>> temperature_of_gas_system(2, 100, 5)
@@ -65,9 +66,10 @@ def temperature_of_gas_system(moles: float, volume: float, pressure: float) -> f
     """
     if moles < 0 or volume < 0 or pressure < 0:
         raise ValueError("Invalid inputs. Enter positive value.")
-    
+
     return (pressure * volume) / (moles * UNIVERSAL_GAS_CONSTANT)
 
+
 def num_moles_of_gas_in_system(kelvin: float, volume: float, pressure: float) -> float:
     """
     >>> temperature_of_gas_system(100, 5, 10)
@@ -81,9 +83,10 @@ def num_moles_of_gas_in_system(kelvin: float, volume: float, pressure: float) ->
     """
     if kelvin < 0 or volume < 0 or pressure < 0:
         raise ValueError("Invalid inputs. Enter positive value.")
-    
+
     return (pressure * volume) / (kelvin * UNIVERSAL_GAS_CONSTANT)
 
+
 if __name__ == "__main__":
     from doctest import testmod