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1. How do i get the net ionic equation for

BaCo3 + HCl ?

HCl + NaOH -> ?

don't really understand this concept of net ionic equation, could some1 put a brief explaination


2. balance MnO4- + I- -> I2 Mn2+

3. what is the rate constant for a first order reaction with a half life of 1.5 h?

thx
 
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