Answer:
A. Glucose
Explanation:
Glucose is a monomer and not a polymer. So, option (A) is not a polymer.
A physical change.
Physical change = can be reverted + doesn't change substance
Chemical = changes substance
Answer:

Explanation:
Hello!
In this case, for the described chemical reaction, we find it is:

Because it says that the iron is dissolved in a strong acid which provides addition hydrogen ions to the reaction media. Thus, for the questions attached on the figure we find:
- This a REDOX reaction because we see iron is being oxidized from 2+ to 3+ and manganese reduced from +7 to +2.
- Since it is a redox reaction and the oxidized species is that undergoing an oxidation number increase, we evidence iron goes from +2 to +3, which means iron is the oxidized species.
- In this case, for the used 59.2 mL (0.0592 L) of the 0.2000 M solution of potassium permanganate, we can compute the consumed grams of iron via stoichiometry including the 5:1 mole ratio between them in the chemical reaction:

It means that the percent of iron in that sample is:

Best regards.
I’m not your just blind. I’m sorry
Why hello there!
The correct answer to your question is C because exothermic energy is based of on using heat and heat acts like the activation !
If my answer helped please mark me as brainliest i really want to rank up thank you and have the best day ever!