What percentage of oxygen is needed for a fire? - Answers
Jun 3, 2024 · A fire needs approximately 16% oxygen in the air to sustain combustion. This is known as the oxygen concentration level for combustion. If the oxygen level drops below this …
Why is liquid oxygen dangerous and what precautions should be …
Feb 7, 2025 · Liquid oxygen is dangerous because it is extremely cold and can cause severe frostbite upon contact with skin. It is also highly reactive and can cause materials to ignite …
What is the general name given to the compounds formed when …
Feb 13, 2025 · What do all compounds that end in oxide have in common? Compounds ending in oxide typically consist of an element bonded to oxygen. Oxides are formed by the combination …
Why do oxygen absorbers get hot when activated? - Answers
Mar 16, 2025 · Oxygen absorbers get hot when activated because they contain iron powder, which reacts with oxygen to create heat as a byproduct. This reaction helps remove oxygen …
What is the ionic compound for lithium and oxygen? - Answers
May 24, 2024 · The ionic compound of lithium (Li) and oxygen (O) is lithium oxide (Li2O). Lithium, being a metal, donates its electron to oxygen, a nonmetal, to form a stable ionic bond.
What is the mechanism that keeps oxygen on Earth? - Answers
Feb 12, 2025 · The mechanism that keeps oxygen on Earth is photosynthesis, a process where plants and other organisms convert carbon dioxide and sunlight into oxygen. This process …
What is the difference between oxygen (O2) and ozone (O3)?
Feb 7, 2025 · Oxygen (O2) has a linear structure and is a diatomic molecule, while ozone (O3) has a bent structure with three oxygen atoms bonded together.
Can oxygen exist as a single atom, or does it always need to
Feb 7, 2025 · Oxygen typically exists as a diatomic molecule (O2) in its natural state. However, it can also exist as a single oxygen atom (O) in certain conditions, such as in the upper …
How does hydrogen and oxygen combine to make water?
Feb 11, 2023 · When two hydrogen atoms fuse with one oxygen atom to create a molecule of water, each hydrogen atom donates its single electron to the oxygen atom, resulting in 10 …
What is the relationship between oxygen and etc? - Answers
Feb 6, 2025 · The relationship between oxygen and the electron transport chain (ETC) is that oxygen is the final electron acceptor in the ETC. During cellular respiration, oxygen is used to …