ajutor la chimie , dau coroana !
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Răspuns:
Explicație:
1.2 NaN3=2Na+3N2
2.VN2=50,4 l
m NaN3=?
MNaN3=23+3*14=65 g/mol
MN2=2*14=28 g/mol
1mol=22,4 l
2*65 g NaN3.......3*22,4 l
x...........................50,4 l
x=2*65*50,4 /3*22,4 =97,5 g