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+//Chapter 1, Example 1.4, Page 23
+clc
+clear
+//Density of Hydrogen atom in water
+p = 1 // density of water in g cm^-3
+Na = 6.022*10^23 // molucules/mol
+A = 18 // atomic weight of water in g/mol
+N = (p*Na)/A
+NH = 2*N
+printf("The density of water = %e molecules/cm3",N);
+printf("\n The density of hydrogen atoms = %e atoms/cm3",NH);
+//Answers may vary due to round off error