The molecular formula for glucose is c 6 h 12 o 6 . what would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

Answer is: the molecular formula for a glucose polymer is C₆₀H₁₀₂O₅₁.
For every link one molecule of water is released, so if we have ten molecules of glucose, there is nine links and nine molecules of water (H₂O) are released.
molecular formula = 10·C₆H₁₂O₆ - 9·H₂O.
carbon atoms = 10 · 6 = 60.
hydrogen atoms = 10 · 12 - 9 · 2 = 102.
oxygen atoms = 10 · 6 - 9 · 1 = 51.

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.