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2 Oblicz masę cząsteczkową
CaSO4 × H2O siarczan(VI) wapna - woda (1/1)
m CaSO4 × H2O = mCa + mS + 4 * mO + 2* mH + mO = 40u + 32u + 64u + 2u + 16u = 154u