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2023-01-08 13:12:27
a. H2SO4
b. Al2O3
2023-01-08 13:12:18
a. H2SO4
b. Al2O3
2023-01-08 13:12:15
a. H2SO4
b. Al2O3
2023-01-08 13:11:47
Khí Clo là hợp chất, nguyên tố Cl là đơn chất.
Khí Ozon là hợp chất, O là đơn chất.
Rượu etanol là hợp chất, H, C và O là đơn chất.
Khí Hidro là hợp chất, H là đơn chất.
Axit sunfuric là hợp chất, H, S và O là đơn chất.