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When used as a disinfectant a fresh bleach solution must be made?
Yes, a fresh bleach solution should be made each time it is needed as bleach loses its disinfectant properties over time when stored. Using a fresh solution ensures that it is effective at killing germs and bacteria.
How does nitrogen keeps food fresh?
Nitrogen helps keep food fresh by displacing oxygen in packaging, which slows down the growth of aerobic bacteria and molds that cause spoilage. By creating a nitrogen-rich environment, it minimizes oxidative reactions that can lead to rancidity and loss of flavor. This method, known as modified atmosphere packaging, helps extend the shelf life of perishable items without the need for preservatives.
Celery stalks that are immersed in fresh water for several hours become stiff and hard If left in a salt solution they become limp and soft From thsi you can deduce that thecells of the celery stalk?
The cells of the celery stalk are hypertonic to fresh water, causing water to move into the cells through osmosis, making them stiff. When placed in a salt solution, the cells become hypotonic, causing water to move out of the cells, resulting in a limp texture.
When used as a disinfectant a fresh bleach solution must be made how often?
A fresh bleach solution should be made at least daily for effective disinfection, as its potency diminishes over time due to evaporation and chemical degradation. For high-risk areas or heavy contamination, it may be advisable to prepare a new solution more frequently, such as every few hours. Always follow the manufacturer's guidelines for concentration and usage.
What is the expiration period for 10 percent bleach solution?
A 10 percent bleach solution typically remains effective for disinfection purposes for up to 24 hours. After this period, the solution may lose its potency and effectiveness in killing germs and bacteria. It is recommended to prepare fresh bleach solution daily for optimal disinfection.
How are Nitrates and Nitrogen different?
Nitrates are the negative ions (NO3-) of nitrate salts in solution and Nitrogen is a diatomic elemental gas (N2), 79% in fresh air, insoluble in water.
What gas is used in packet foods to keep the contents fresh?
nitrogen that works as antioxidant and prevent rancidity
Is saltwater a solution or solute?
Saltwater is a solution because you can get fresh water and some salt and mix it and then you get saltwater.
Why is nitrogen used in crisp packets?
Nitrogen is used in crisp packets due to its inert properties, which help maintain the freshness and crispiness of the chips. By replacing oxygen with nitrogen, the oxidation process that degrades the chips is slowed down, allowing them to stay fresh for longer periods.
How often do you need to mix up a fresh bleach solution for cleaning purposes?
For effective cleaning, it is recommended to mix up a fresh bleach solution each day before use.
When used as a disinfectant a fresh bleach solution must be made?
Yes, a fresh bleach solution should be made each time it is needed as bleach loses its disinfectant properties over time when stored. Using a fresh solution ensures that it is effective at killing germs and bacteria.
Substances in fresh water in clouds?
There are not many substances in fresh water clouds. There is basically only oxygen, hydrogen, and trace amounts of carbon and nitrogen.
What is nitrogen used for for kids?
nitrogen is used for experiments like: trying to turn a liquid into a solid nitrogen can do that for you
What happens to a fresh water organism in 20 percent of saline solution?
it dies since it enters a hypotonic solution thus making it shrink
What does nitrogen do to ponds?
Nitrogen takes up oxogen in fresh bodies of water. If there is too much Nitrogen, it can kill a fresh body of water such as a pond. A sustainable amount of Nitrogen would be 1-100ppm (parts per million). Anything above 100ppm is unhealthy. Anything above 200ppm can destroy an entire ecosystem. Hope this was helpful!
Celery stalks that are immersed in fresh water for several hours become stiff and hard Similar stalks left in a salt solution become limp and soft From this you can deduce that the cells of the celer?
hypertonic to fresh water but hypotonic to the salt solution
How does nitrogen keeps food fresh?
Nitrogen helps keep food fresh by displacing oxygen in packaging, which slows down the growth of aerobic bacteria and molds that cause spoilage. By creating a nitrogen-rich environment, it minimizes oxidative reactions that can lead to rancidity and loss of flavor. This method, known as modified atmosphere packaging, helps extend the shelf life of perishable items without the need for preservatives.
