Zadanie 1
M CO=12 g/mol+16 g/mol=28 g/mol
Dane:
M=28 g
V=22,4 dm3
Szukane:
d=?
d=M/V
Obliczenia:
d=28 g/22,4 dm3
d=1,25 g/dm3
Zadanie 2
184 g/mol---100%
x g/mol---56,52%
x=104 g/mol
104 g/mol:52 g/mol=2 atomy Cr
184 g/mol-104 g/mol=80 g/mol
80 g/mol:16 g/mol=5 atomów O
Wzór: Cr2O5
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Zadanie 1
M CO=12 g/mol+16 g/mol=28 g/mol
Dane:
M=28 g
V=22,4 dm3
Szukane:
d=?
d=M/V
Obliczenia:
d=28 g/22,4 dm3
d=1,25 g/dm3
Zadanie 2
184 g/mol---100%
x g/mol---56,52%
x=104 g/mol
104 g/mol:52 g/mol=2 atomy Cr
184 g/mol-104 g/mol=80 g/mol
80 g/mol:16 g/mol=5 atomów O
Wzór: Cr2O5