2CH4 = C2H2 + 3H2 номер 4
Объяснение:
Объяснение:
1) CuO - оксид меди(II)
ZnO - оксид цинка
MgO- оксид магния
Na2O - оксид натрия
P2O5 - оксид фосфора(V)
P2O3- оксид фосфора(III)
SO3 - оксид серы(VI)
SO2 - оксид серы(IV)
2) NaOH - гидроксид натрия
Mg(OH)2 - гидроксид магния
Ba(OH)2 - гидроксид бария
Zn(OH)2 - гидроксид цинка
KOH - гидроксид калия
3) H2SO4 - серная кислота ( сульфат)
H3PO4 - фосфорная кислота(фосфат)
HCl - соляная кислота (хлорид)
H2S - сероводородная кислота (сульфид)
HNO3 - азотная кислота ( нитрат)
4) NaCl - хлорид натрия
KNO3 - нитрат калия
FeCl3 - хлорид железа(III)
ZnCl2 - хлорид цинка
CuCl2 - хлорид меди(II)
FeSO4 - сульфат железа (II)(сульфат)
5) 7
6) 8
7) 11
8) Mr(C6H12O6) =12*6 + 1*12 + 16*6 =180
9) S(VI)O(II), S(IV)O(II), P(V)O(II), P(III)O(II)
10) Ковалентная полярная (HCl)
Ковалентная неполярная (Н2)
Ионная (NaCl)
Металлическая(Na)
Hi! My name is Jack. Visiting a river site is one of my most favourite things to do during the
summertime. The lakes I visited, was located about fifty kilometres away from my
hometown in the countryside. It was great! There were a number of restaurants and café. I
friends stayed at a hotel which was very close to the waterfalls. There were also
many beautiful mountains trees and waterfalls
I also walked on the sandy bank of the
river and i was surprised when my friends took a fish-rod for fishing. I swam every day.
Also we climbed the mountains It was a wonderful holiday.
and my
4)
Объяснение:
2CH4 = C2H2 + 3H2