If M = 1.1 kg, what is the tension in string 1? 
Definitions:
Neutral Solution
A solution of pH 7; there are equal concentrations of hydrogen ions [H+] and hydroxide ions [OH-]. Compare with acidic solution and basic solution.
Valence Electrons
The outermost electrons of an atom, which determine its chemical bonding properties.
Chemical Properties
Chemical properties are characteristics of a substance that determine how it interacts with other substances during chemical reactions, defining its composition and behavior.
Buffer
A solution that resists changes in pH when acid or alkali is added to it.
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