3

3-1. delta.uc.gif (844 bytes)H = 125.4 .

3-2. = 160.7 /.

3-3. 56.4 /.

3-4. (N2O5 ) = 13.3 /.

3-5. delta.uc.gif (844 bytes)rH0 = 32 /.

3-6. (B2H6 ) = 36.7 /.

3-7. (ZnSO4 ) = 981.4 /.

3-8.  delta.uc.gif (844 bytes)rH0 = 99.6 /.

3-9.  delta.uc.gif (844 bytes)rH0 = 225.2 /.

3-10. (Na2 O) = 413.4 /.

3-11.  delta.uc.gif (844 bytes)H = 1167 /.

3-12.  delta.uc.gif (844 bytes)rH0 = 55.8 /.

3-13. = 6.5 /.

3-14. d delta.uc.gif (844 bytes)U / dT = D CV.

3-15.  delta.uc.gif (844 bytes)Cp = 3.216 /( . ).

3-16. 1672.6 /.

3-17. = 1800 .