Can you help me understand this Chemistry question?

Lab 3 video:

https://echo360.org/media/4d98e402-39b6-40e8-97ff-3ff9be6ca9cf/public

https://www.youtube.com/watch?v=QoJRDDxMkLc

https://www.youtube.com/watch?v=8efZRBCFpRg

https://www.youtube.com/watch?v=Il9hlMT0aUQ

Perform the calculations missing on the report sheet using the data I have provided. Do not use the data given in the videos.

Lab 4 video:

https://echo360.org/media/62eea071-7fa2-40e0-96ad-dd9ae617f032/public

https://www.youtube.com/watch?v=OuF4hjTFdsg

https://www.youtube.com/watch?v=fcTfNhJCkog

Perform the calculations missing on the report sheet using the data I have provided. Do not use the data given in the videos.

 

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