H
hellocongchuatien


giupppppppppppppppppp minhhhhhhhhhh voiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiCần bao nhiêu gam NaOH để pha chế 300,0 ml dung dịch có pH = 10,0?
- 1,2 . 10-3 gam
- 4,00 . 10-3 gam
- 1,68 . 10-3 gam
- 3,00 . 10-5 gam