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diff --git a/858/CH2/EX2.5/example_5.sce b/858/CH2/EX2.5/example_5.sce
new file mode 100755
index 000000000..b4989d530
--- /dev/null
+++ b/858/CH2/EX2.5/example_5.sce
@@ -0,0 +1,15 @@
+clc
+clear 
+printf("example 2.5 page number 72\n\n")
+
+//to find the carbon content in sample
+
+w=4.73    //in gm5
+VCO2=5.30    //in liters
+
+weight_CO2=44/22.4*VCO2;
+carbon_content=12/44*weight_CO2;
+
+percentage_content=(carbon_content/w)*100;
+
+printf("percentage amount of carbon in sample = %f",percentage_content)