Read the following information from a material safety data sheet (msds) about the chemical hydrochloric acid (hcl). “skin contact: in case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. wash clothing before reuse. thoroughly clean shoes before reuse. get medical attention immediately.” based on this information, which is the most important thing to do right away if a student spills hcl on his shirt?

The MSDS or a Material Safety Data Sheet refers to a document, which comprises all the information on the potential hazards, that is, fire, health, environmental, and reactivity, and how to function with precaution with the chemical product.  

It is an important initiation point for the establishment of a complete health and safety program. According to MSDS, in the given case of spilling of HCl on the shirt, one should quickly remove the shirt and rinse the skin with water in case if the HCl would have penetrated through.  

remove the shirt and rinse the skin with water in case the HCl soaked through.

Explanation:

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.