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M=79g/mol
1 mol - 79g
0,22 mola - x
x=17,38g
b) 0,15 mola cząsteczek XeO3
M(XeO3)=131+3*16=179g/mol
1 mol - 179g
0,15 mola - x
x=26,85g
c) 1,2 mola cząsteczek CCl4
M(CCl4)=12+4*35,5=154g/mol
1 mol - 154g
1,2 mola - x
x=184,8g
d) 2 mole K4[Fe(CN)6]
M(K4[Fe(CN)6])=4*39+56+6*12+6*14=368g/mol
1 mol - 368g
2 mole - x
x=736g