So,
Our conceptual plan is as follows:
g AlCl3 --> mol AlCl3 --> mol H2 --> g H2

Hope this helps!
Yes that is correct because hypotheses should be testable meaning it can be proven wrong and it has to be reasonable meaning it should make sense.
Pretty sure its all of the above since all of them are true
Answer:
See below.
Explanation:
That is because of the .48.
85.48 is closer to 85 than 86.