What is the overall effect on temperature of adding chemicals to ice cold water?

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What is important to study for nios grade 12 chemistry? i have only one month left.

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Write the overall equation for the reaction for lithium battery