Which of the following statements are true? Liquid nitrogen expands 695 times in

Bilim Kimya
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Which of the following statements are true?

  1. Liquid nitrogen expands 695 times in volume when it vaporizes.
  2. The vapor of liquid nitrogen can rapidly freeze skin tissue and eye fluid, resulting in cold burns.
  3. Cylinders and Dewars can be filled to more than 80% of capacity.
  4. Gloves should be loose-fitting so they can be quickly removed if cryogenic liquid is spilled on them.
  5. Wear safety glasses or a face shield when transferring liquid nitrogen.
  6. Nitrogen gas is colorless and odorless; the cloud that forms when pouring liquid nitrogen is condensed vapor from the air, not nitrogen gas.
  7. Use approved cryogenic containers that are specifically designed for liquid nitrogen and made of materials that can withstand extreme temperature differences.
  8. Transfer of liquid into warm lines or containers must be done slowly to prevent thermal shock and possible buildup of pressure.
  9. In case of spilling, cleaning services (Euroserve) should be called.
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The following statements are true:

  1. Liquid nitrogen expands 695 times in volume when it vaporizes.

    • Liquid nitrogen undergoes a rapid expansion in volume when it turns into a gas. This expansion can be as much as 695 times its original volume.

  2. The vapor of liquid nitrogen can rapidly freeze skin tissue and eye fluid, resulting in cold burns.

    • The extremely low temperature of liquid nitrogen and its vapor can cause severe cold burns if it comes into direct contact with the skin or eyes. It can freeze and damage the tissues at a rapid rate.

  3. Cylinders and Dewars can be filled to more than 80% of capacity.

    • Cryogenic cylinders and Dewars that contain liquid nitrogen can be safely filled to more than 80% of their total capacity. However, it is important to follow proper guidelines and safety precautions when filling and handling these containers.

  4. Gloves should be loose-fitting so they can be quickly removed if cryogenic liquid is spilled on them.

    • It is recommended to wear loose-fitting gloves when working with cryogenic liquids like liquid nitrogen. This allows for quick removal of the gloves in case of a spill, preventing the liquid from getting trapped against the skin.

  5. Wear safety glasses or a face shield when transferring liquid nitrogen.

    • Safety glasses or a face shield should be worn when handling and transferring liquid nitrogen to protect the eyes from potential splashes or exposure to the extremely low temperatures.

  6. Nitrogen gas is colorless and odorless; the cloud that forms when pouring liquid nitrogen is condensed vapor from the air, not nitrogen gas.

    • Nitrogen gas is indeed colorless and odorless. When liquid nitrogen is poured or exposed to the air, it rapidly evaporates into a cloud due to the condensation of water vapor present in the air.

  7. Use approved cryogenic containers that are specifically designed for liquid nitrogen and made of materials that can withstand extreme temperature differences.

    • It is important to use containers that are specifically designed for storing and handling liquid nitrogen. These containers should be made of materials that can withstand the extreme temperature differences and built to safely contain the cryogenic liquid.

  8. Transfer of liquid into warm lines or containers must be done slowly to prevent thermal shock and possible buildup of pressure.

    • When transferring liquid nitrogen into warm lines or containers, it is crucial to do it slowly and carefully. This prevents thermal shock, which can lead to pressure buildup and potential hazards.

Regarding the last statement about calling cleaning services (Euroserve) in case of a spill, there is not enough information provided to determine its accuracy. It is advisable to follow the established safety protocols and guidelines for cleaning and handling cryogenic spills.