4al + 3o₂→2al₂o₃\nthis is a __________ reaction and the product(s) is/are\na replacement; aluminum.\nb…

4al + 3o₂→2al₂o₃\nthis is a __________ reaction and the product(s) is/are\na replacement; aluminum.\nb decomposition; oxygen.\nc synthesis; aluminum oxide.\nd decomposition; aluminum oxide.

4al + 3o₂→2al₂o₃\nthis is a __________ reaction and the product(s) is/are\na replacement; aluminum.\nb decomposition; oxygen.\nc synthesis; aluminum oxide.\nd decomposition; aluminum oxide.

Answer

Brief Explanations:

In a synthesis reaction, two or more substances combine to form a single product. Here, aluminum (Al) and oxygen ($O_2$) combine to form aluminum oxide ($Al_2O_3$). The product is aluminum oxide. Replacement reactions involve one element replacing another in a compound, decomposition reactions involve a single - compound breaking down into simpler substances. This reaction is a synthesis reaction.

Answer:

C. synthesis; aluminum oxide