When it comes to the environment and the oceans ecosystem whales help regulate the flow of food by helping to maintain a stable food chain and ensuring that certain animal species do not overpopulate the ocean.
A or C
Just choose any of those!
Answer:
Explanation:
An accurate written record detailing all aspects of patient monitoring is important, not only because it forms an integral part of the of the provision of care or nursing management of the patient, but because it also contributes to the circulation of information amongst the different teams involved in the patient’s treatment or care.
In a legal sense, documentation and record keeping is also there for the protection of the nurse or healthcare professional.
A well-kept record can protect the practitioner in instances where the legal defence of their actions is required. Documentation also ensures a matter of professionalisation and proof of the improvement of practices.
Answer:
Explanation:
Oxygen gas and water must be present for iron to rust.
A region of the metal’s surface serves as the anode, where oxidation
occurs:
Fe(s) → Fe²⁺ (aq) + 2 e⁻
The electrons given up by iron reduce atmospheric oxygen to water at the cathode, which is another region of the same metal’s surface:
O₂ (g) + 4H⁺ (aq) + 4 e⁻ → 2 H₂O (l)
The overall redox reaction is:
2 Fe(s) + O₂(g) → 4H⁺(aq) + 2Fe²⁺ (aq) + 2 H₂O(l)
The Fe²⁺ ions formed at the anode are further oxidized by oxygen:
4 Fe²⁺ (aq) + O₂(g) 1 (4 + 2x) H₂O (l) → 2 Fe₂O₃ . xH₂O(s) + 8 H⁺(aq)
This hydrated form of iron(III) oxide is known as rust. The amount of water associated with the iron oxide varies, so we represent the formula as 2 Fe₂O₃ . xH₂O.
