When you doing a titration, you need to use an indicator to confirm whether the reaction is completed. When the indicator has the color change and will not change back in one minute, the reaction is finished and you don't need to add more.
Answer:
A cuz a heterogeneous mixture is no uniform
Answer:
There's a total of 8 oxygen atoms in the formula Cu3(PO4)2
Exothermic processes: Making ice cubes,formation of snow in clouds
Endothermic processe: Melting ice cubes, evaporation of water