4 zadanka w załaczniku pliiss!!!
dam naj!
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4 zadanka w załaczniku pliiss!!!
dam naj!
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1)
N₂ + 3H₂ ---> 2NH₃
4NH₃ + 5O₂ ---> 4NO + 6H₂O
2NO + O₂ ---> 2NO₂
2)
a) mX₂O=62u
2X+16=62
2X=46
X=23u
Wzór: Na₂O
b) mX2O3=102u
2X+48=102
2X=54
X=27u
Wzór: Al2O3
c) mX₂O₅=142u
2X+80=142
2X=62
X=31u
Wzór: P₂O₅
3) NxOy
x+y=6 -------> x=6-y
14x+16y=92
14(6-y)+16y=92
84-14y+16y=92
2y=8
y=4
x=6-4=2
Wzór: N₂O₄
4)
56x / 18y = 21 / 9
504x = 378y
1,33x = y
4x = 3y
x : y = 3 :4
Wzór tlenku: Fe₃O₄