From f60e9837886f74a6d7e698aaa7f572c818340594 Mon Sep 17 00:00:00 2001
From: Alvie Rahman <alvierahman90@gmail.com>
Date: Tue, 28 Dec 2021 19:49:05 +0000
Subject: [PATCH] Add SI units for specific and molar gas constant

---
 .../thermodynamics.md                                     | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/uni/mmme/1048_thermodynamics_and_fluid_mechanics/thermodynamics.md b/uni/mmme/1048_thermodynamics_and_fluid_mechanics/thermodynamics.md
index 524dff9..b779009 100755
--- a/uni/mmme/1048_thermodynamics_and_fluid_mechanics/thermodynamics.md
+++ b/uni/mmme/1048_thermodynamics_and_fluid_mechanics/thermodynamics.md
@@ -118,6 +118,14 @@ c_p &= \frac{\gamma}{\gamma -1} R
 
 </details>
 
+### The Specfic and Molar Gas Constant
+
+The molar gas constant is represented by $\tilde R = 8.31 \text{JK}^{-1}\text{mol}^{-1}$.
+
+The specific gas constant is $R = \frac{\tilde{R}}{M}$.  
+The SI unit for the specific gas constant is J kg$^{-1}$ mol$^{-1}$.  
+The SI unit for molar mass is kg mol$^{-1}$.
+
 ## Thermodynamic Processes and Cycles
 
 When a thermodynamic system changes from one state to another it is said to execute a *process*.