Water absorbs oxygen through a process called diffusion. Oxygen molecules in the air have a higher concentration than in water, so they naturally move from the air into the water until equilibrium is reached. This process allows oxygen to dissolve in water, making it available for aquatic organisms to breathe. **

Yes, there is water without oxygen. Water is composed of two hydrogen atoms and one oxygen atom, but it is possible for water to exist in environments where there is little to no oxygen present. For example, water can be found in deep underground aquifers or in certain extreme environments such as deep sea hydrothermal vents, where oxygen levels are very low. **

Oxygen in water refers to the dissolved oxygen molecules present in the water. This oxygen is essential for the survival of aquatic organisms, as they use it for respiration. The amount of oxygen in water can vary depending on factors such as temperature, salinity, and the presence of aquatic plants. Adequate levels of dissolved oxygen are crucial for maintaining a healthy aquatic ecosystem. **

Yes, you can boil frozen salmon in water. However, it is generally recommended to thaw the salmon before cooking it to ensure even cooking and better texture. If you do choose to boil frozen salmon, make sure to add it to the boiling water and cook it for a few extra minutes to ensure it is fully cooked. Keep in mind that boiling frozen salmon may result in a slightly different texture compared to thawed salmon. **

Fried salmon can typically be stored in the refrigerator for 3-4 days. It is important to make sure it is properly stored in an airtight container to maintain its freshness. After this time, the quality and taste of the fried salmon may start to deteriorate, so it is best to consume it within a few days of cooking. **

Water without oxygen is not hydrogen. Water is composed of two hydrogen atoms and one oxygen atom, while hydrogen is a separate element with its own unique properties. Removing the oxygen from water does not turn it into hydrogen; it simply leaves behind the hydrogen atoms. Therefore, water without oxygen is not the same as hydrogen. **

Salmon can typically last for about 2 hours at room temperature before it needs to be refrigerated. If the temperature is above 90°F (32°C), it is recommended to refrigerate the salmon within 1 hour. To extend the shelf life of salmon without refrigeration, it is best to keep it in a cooler with ice packs or store it in a cold environment. **

One can extract oxygen from water through a process called electrolysis. In electrolysis, an electric current is passed through water, causing the water molecules to split into oxygen and hydrogen gas. The oxygen gas is then collected at the anode, while the hydrogen gas is collected at the cathode. This method is commonly used in laboratories and industrial settings to produce oxygen gas. **