mNH4Cl=14u+4*1u+35,5u=53,5 u
M NH4Cl=14g/mol+4*1g/mol+35,5g/mol=53,5 g/mol
mMgSO4*7 H2O=24u+32u+4*16u+7*18u=246 u
M MgSO4*7 H2O=24g/mol+32g/mol+4*16g/mol+7*18g/mol=246 g/mol
mH3PO4=3*1u+31u+4*16u=98u
M H3PO4=3*1 g/mol+31 g/mol+4*16 g/mol=98g/mol
mAl(OH)3=27u+3*16u+3*1u=78 u
M Al(OH)3=27 g/mol+3*16 g/mol+3*1 g/mol=78 g/mol
mFe(NO3)3=56u+3*14u+9*16u=242 u
M Fe(NO3)3=56 g/mol+3*14 g/mol+9*16 g/mol=242 g/mol
mMgO=24u+16u=40 u
M MgO=24 g/mol+16 g/mol=40 g/mol
mH2=2*1u=2 u
M H2=2*1 g/mol=2 g/mol
