if 4 grams sodium chloride dissolve in 200ml, whats the concentration of sodoum chloride in the water.?
回答 (1)
2016-11-23 10:53 am
✔ 最佳答案
Molar mass of NaCl = (23.0 + 35.5) g/mol = 58.5 g/molNo. of moles of NaCl = (4 g) / (58.5 g/mol) = 0.0684 mol
Volume of solution = 200 mL = 0.2 L
Concentration of NaCl = (0.0684 mol) / (0.2 L) = 0.342 M
收錄日期: 2021-04-18 15:53:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161123020012AA8msIg