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C+O2---> CO2
mC=3g
MC=12g/mol
MCO2=12+16*2=44g/mol
MO2=16*2=32g/mol
12g/mol C 3g C
---------------- = --------
44g/mol CO2 xg CO2
x=11g
32g/mol O2 xg O2
------------- = --------
44g/mol CO2 11g CO2
x=8g
Odp: Do spalenia tlenu potrzebujemy 8g.
Pozdrawiam ;)
mC=12u
mO=16u
C + O₂---->CO₂
12g C------2*16g tlenu
3g C--------xg tlenu
x=3*2*16/12
x=8g tlenu
12u - 32u
3g - xg
xg=(32u*3g):12u = 96g:12 = 8 g