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u-unit
a) NH3
mcz=14u+3razy 1u
mcz=17u
b)Al2O3
mcz=2razy 27u + 3razy 16u
mcz=102u
c)H2SO3
mcz=2razy 1u + 32u + 3razy 16u
mcz=82u
Proszę bardzo