Water sodium chloride each Na + (ag) + Cl not NaCl 2 or Na 2 S0 4 , N0 3 (s) Atom/group being balanced Cr O Cr 2 0 (1) AH = -1560 kj mol 1 = 193.1 kj mol 1 So per mole or (g) = (mol) x (g.moh 1 ) Aluminium 0.901 Iron 0.449 Water 4.18 128 Download free eBooks at Planet eBook.com 3i5 ‘Four! Stop it, stop the pain!’ Abruptly he was too.