Answer:
I think it's 7089 because that's my answer to your questions
The answer is d
Hope this helps
Answer:
iron (III) oxide =Fe2O3
iron(III) carbonate =Fe2(CO3)3
To help you answer this question, you can search a sample reaction in the internet for hydroboration-oxidation. Take a look at the attached picture. The sample reaction is shown at the top. We can deduce that the original compound must be an alkene. Following the pattern, compound a must be 2-methylbutene as shown in the picture.