Answer:
Boiling of a substance
Explanation:
When something is boiled, heat is released to the surrounding, making it an exothermic reaction (a type of chemical reaction)
Answer: the answer is formation of gas
Explanation: i took the qwiz and boliing water is wrong
not sure if this is the right way to answer this question but PbS is Phosphate-buffered saline (i think)
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