Answer:
In the oxidation of glucose, carbon dioxide and water are formed. As new products are formed of different composition and characteristics, the respiration is considered as a chemical change.
Explanation:
hope that works
Answer:
The magnets need to be placed with red closest to blue.
Opposite poles attract.
The magnets will be attracted to each other with enough force to stick together.
Explanation:
That n2 = 2*n1. That is, the index of refraction is twice as big in medium 2 since v=c/n
Using q=1.60217662 E-19 C we get:

Then using 9.10938356E-31 kg as the mass, we get