Zadanie 1
a) mNa3PO4=3*23u+31u+4*16u=164u
b) mMg(NO3)2=24u+2*14u+6*16u=148u
Zadanie 2
a) mK2CO3=2*39u+12u+3*16u=138u
78u---x%
138u---100%
x=56,52%K
12u---x%
x=8,7%C
100%-(56,52%+8,7%)=34,78%O
b) mNa2SO4=2*23u+32u+4*16u=142u
46u---x%
142u---100%
x=32,39%Na
32u---x%
x=22,54%S
100%-(32,39%+22,54%)=45,07%O
Zadanie 3
a) mSiO2=28u+2*16u
Stosunek masowy:
mSi:mO=28:32=7:8
b) mMgBr2=24u+2*80u
mMg:mBr=24:160=3:20
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Zadanie 1
a) mNa3PO4=3*23u+31u+4*16u=164u
b) mMg(NO3)2=24u+2*14u+6*16u=148u
Zadanie 2
a) mK2CO3=2*39u+12u+3*16u=138u
78u---x%
138u---100%
x=56,52%K
12u---x%
138u---100%
x=8,7%C
100%-(56,52%+8,7%)=34,78%O
b) mNa2SO4=2*23u+32u+4*16u=142u
46u---x%
142u---100%
x=32,39%Na
32u---x%
142u---100%
x=22,54%S
100%-(32,39%+22,54%)=45,07%O
Zadanie 3
a) mSiO2=28u+2*16u
Stosunek masowy:
mSi:mO=28:32=7:8
b) mMgBr2=24u+2*80u
Stosunek masowy:
mMg:mBr=24:160=3:20