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Ms=32g/mol
1 mol - 32g
x - 3.2g
x=1molx3.2g/32g=0.1 mola
b) 6g wody
MH20=2x1+16=18g/mol
18g - 1 mol
6g - x
x=6gx1mol/18g=0.3 mola
c) 12g magnezu
MMg=24g/mol
24g - 1mol
12g - x
x=12gx1mol/24g=0.5mola
d) 12,6g kw. azotowego (V)
MHNO3=1+14+3x16g=63g/mol
63g - 1 mol
12.6g - x
x=12.6gx1mol/63g=0.2mola
e) 11g tlenku węgla (IV)
MCO2=12g+2x16g=44g/mol
44g - 1mol
11g - x
x=11gx1mol/44g=0.25mola
a) dla siarki
32g S - 1 mol
3,2g S - x mol
x = 0,1 mola
b) dla wody
18g H2O - 1mol
6 g H2O - x mol
x = 0,33 mola
c) dla magnezu
24g Mg - 1 mol
12g Mg - x mol
x = 0,5 mola
d) dla kwasu azotowego V
63g HNO3 - 1 mol
12,6g HNO3 - x mol
x = 0,2 mola
e) dla ditlenku węgla
44 g CO2 - 1 mol
11g CO2 - x mol
x = 0,25 mola
M(masa) siarki- 32g/mol
1 mol S-----ma masę-----32g
to X moli S---ma masę---3,2g
X= 3,2g × 1 mol : 32g = 0,1 mola
b)
1 mol H₂O= 2 × 1g/mol + 16g/mol= 18g/mol
1 mol H₂O-----ma masę-----18g
to X moli H₂O---ma masę---6 g
X= 6g × 1 mol : 18g = 0,3 mola
c)
1 mol magnezu ma masę -24g/mol
1 mol Mg----ma masę-----24g
to X moli Mg--ma masę---12 g
X= 12g × 1 mol : 24g = 0,5 mola
d)
1 mol HNO₃ ma masę- 1g/mol + 14g/mol + 3× 16g/mol= 62 g/mol
1 mol HNO₃ ----ma masę-----62 g
to X moli HNO₃---ma masę---12,6 g
X= 12,6g × 1 mol : 62g = 0,2 mola
e)
1 mol CO₂ ma masę- 12g/mol + 2× 16g/mol=44g/mol
1 mol CO₂ ----ma masę-----44 g
to X moli CO₂---ma masę---11 g
X= 11g × 1 mol : 44g = 0,25 mola