1. Oblicz masę: 2 moli tlenku sodu,6 moli wodoru, 0,5 mola magnezu, 9 moli wody, 4 mole kwasu siarkowego VI 2. Ile moli stanowi: 36g wody, 12g wodoru cząsteczkowego, 4g kwasu solnego, 8g azotu, 12g żelaza
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Na2O
62 g - 1 mol
x g - 2 mole
x=62*2=124g/mol
1 mol H2 - 1 g
6 moli H2 - x g
x=6*1=6 g/mol
1 mol Mg - 24 g
0,5 mola Mg - x g
x=0,5*24=12g/mol
1 mol H2O - 18 g
9 moli H2o - x g
x=9*18 = 162 g/mol
1 mol H2SO4 - 98 g
4 mole H2So4 - x g
x=4*98=392 g/mol
2.
36g - x mol
18g - 1 mol
x=36/18=2 mole H2O
12 g - x mol
2 g -1 mol
x=12/2 = 6 moli H2
4 g - x moli
36 g - 1 mol
x=0,1 mol HCl
8 g - x mol
28 g - 1 mol
x=0,28 moli N2
12 g - x mol
56 g - 1 mol
x=0,21 moli Fe