It’s the fourth answer option
Balanced chemical equation: C(s) + O₂(g) → CO₂(g).
Oxidation half reaction: C⁰ → C⁺⁴ + 4e⁻.
Reduction half reaction: O₂⁰ + 4e⁻ → 2O⁻².
Carbon is oxidized, it changes oxidation number from zero (in carbon element) to oxidation number +4 (in carbon dioxide).
Oxygen is reduced, it changes oxidation number from zero (in molecule of oxygen) to oxidation number -2 (in carbon dioxide).
Answer: An endothermic reaction occurs when energy is absorbed from the surroundings in the form of heat. Conversely, an exothermic reaction is one in which energy is released from the system into the surroundings.
How are endothermic and exothermic reactions the same?
They are both changes in which energy is present.
Explanation:
Hi :)
I would say it’s C) A nurse forgets to feed a patient
Because, the patient may be unable to eat on his/her own, and it could need the energy from the food
Hope this helps!
Frozen. Most of Greenland is covered in freshwater that is frozen.