[mass]

2HCl _ 2NaOH _ C9H8O4_
2000 ml 1M HCl _ 2000 ml 1M NaOH _ 180.16 g C9H8O4
1 ml 1M HCl _ 1 ml 1M NaOH _ 0.09008 g C9H8O4
1 ml 0.5M HCl _ 1 ml 0.5M NaOH _ 0.04504 g C9H8O4


I dont understand it basically, can someone show me where 180.16g has come from and why that has suddenly changed.

[Borek]

180.16g

Molar mass.