Question

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Answer 1

Răspuns:

1) 2H2 +O2=>2H2O

2x2gH2..............32gO2

32g.....................X

X=32x32/4=256gO2

2x2gH2.......................2x18gNH3

32g..................................Y

Y=32x36/4=288gNH3

2) 100kg sol......................15kg NaCl pur

2925kg................................x

X=2925x15/100=438,75kg NaCl

Masa NaCl=58,5

2x58,5kgNaCl........................2kgH2

438,5kg................................Y

Y=7,5kg pe zi x30=225kg pe luna

3) 3H2+N2=2NH3

3moli H2.......................1mol N2

0,4.....................................X

X=0,4/3=0,13 moliN2

0,2-0,13=0,06 moliN2 in exces

3moli H2..........................2x17gNH3

0,4moli..........................Y

Y=0,4x2x17/3=4,53g NH3

Explicație: