I know,
CADBD ACDCC
1 1、3，C:H:O = 12:22: 1 1、45
12, electron, proton, neutron
13, equal to112, nucleus, relative atomic mass.
14, 4CO2, 3K, H2, hydrogen, 3OH-, Fe2+, n
15、
( 1)①②
(2)①
(3) ②
(4)⑥
(5) ①
(6)③④
(7) ⑥
(8) ①②⑤
16、64, 93
17、25, 55
18, H2O, carbon monoxide, carbon dioxide
19, 1, red phosphorus, graphite is C, and diamond is C.
20, 3, 13, lost, Yang
2 1、A、D、AD、BCD、D
22、60，C:H:N=6:2:7，40%
23 、( 1)C:H:O=6: 1:4
(2) 1.3g
1.30
1, atomic species, atomic number and atomic mass have not changed.
2、① ③ ⑥ ⑦ ⑧
3, objective facts, conservation of quality
Bucket type charge coupling device
light
4P+5O2===========2P2O5
light
3Fe+2O2====Fe3O4
light
2CO+O2====2CO2
Calcium oxide +H2O = calcium hydroxide
manganese dioxide
2H2O 2 = = = = = = = = 2H2O+O2↓
△
2KMnO4===K2MnO4+MnO2+O2↑
high-temperature
CaCO3 = = = = = = CaO+CO2↑
Zinc+sulfuric acid = = zinc sulfate +H2
2Al+3H2SO4==3H2↑+Al2(SO4)3
high-temperature
C+2CuO====2Cu+ CO2↑
Fe+cuso 4 = = = = = feso 4+Cu
Copper+copper nitrate = = 2Ag+ copper nitrate
Fe+2AgNO3==2Ag+Fe(NO3)2
Sodium hydroxide+hydrochloric acid = H2O+ sodium chloride
Fe2O3+3H2SO4===3H2O+Fe2(SO4)3
CaCO3+2HCl==CaCl2+H2O+CO2
Calcium hydroxide+sodium carbonate = = calcium carbonate ↓+sodium hydroxide
△
CO+CuO==Cu+CO2
high-temperature
2Fe2O3+3C====3CO2↑+4Fe
light
CH4+3O2==== CO2+2H2O
light
C2H5OH+3O2==== 2CO2+3H2O
2NaOH+CO2==== Na2CO3+ H2O
Calcium hydroxide+carbon dioxide = = calcium carbonate ↓+ H2O
2NaOH+SO2== Na2SO3+ H2O
catalyst
2NO+2CO===N2+2CO2
light
c 2 1H30O+28o 2 = = = 2 1co 2+ 15H2O
△
Decomposition of Cu2 (OH) 2co3 = = 2cuo+H2O+CO2 =
8, 7.35 kg