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+//Variable Declaration:
+Q1 = 20.0                   //Mass (lb) (part 1)
+MH = 1.008                  //Molecular weight of H (lb/lbmol)
+MO = 15.999                 //Molecular weight of O (lb/lbmol)
+Q2 = 454                    //Gram in pound (part 2)
+Q3 = 6.023*10**23           //Avogadro nuber (part 3)
+ 
+//Calculations:
+Mol = 2*MH+MO               //Molecular weight of water (lb/lbmol)
+A1 = Q1/Mol                 //Pound.moles of water (lbmol)
+A2 = Q1*Q2/Mol              //Gram.moles of water (gmol)
+A3 = A2*Q3                  //Molecules of water (molecules)
+ 
+//Results:
+disp("1. Pound.moles of water is:")
+disp(A1)
+disp("lbmol water")
+
+disp("2. Gram.moles of water is:")
+disp(A2)
+disp("gmol water")
+
+disp("3. Molecules of water is:")
+disp(A3/10**26)
+disp(" x 10**26 molecules")