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GorgeousD
@GorgeousD
June 2022
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первые 4 задачи, с полным решением
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ndambaeva
1.
14g x g
4Li+O2=2Li2O
4*7 2*46
x=14*92/28=46g
2.
40g xg
2H2+O2=2H2O
2*2 32g
x=40*32/4=320g
3.
0.2mol xg
2HgO=2Hg+O2
2mol 2*200.5g
x=0.2*401/2=40.1g
4.
xmol 20.4g
4Al+3O2=2Al2O3
4mol 2*102g
x=4*20.4/204=0.4mol
m=0.4mol*27g/mol=10.8g
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Answers & Comments
14g x g
4Li+O2=2Li2O
4*7 2*46
x=14*92/28=46g
2.
40g xg
2H2+O2=2H2O
2*2 32g
x=40*32/4=320g
3.
0.2mol xg
2HgO=2Hg+O2
2mol 2*200.5g
x=0.2*401/2=40.1g
4.
xmol 20.4g
4Al+3O2=2Al2O3
4mol 2*102g
x=4*20.4/204=0.4mol
m=0.4mol*27g/mol=10.8g