Settings | Sign in | Sign up
Purasbar

The author has 1 post.

第二步：2NaHCO3=△=Na2CO3+H2O+CO2↑

Floor 1 HSbF6Onizuka 7/16/12 0:53
纯碱制得！

Content converter:

Reply the post
Content:
User: You are currently anonymous.
Captcha:
Unclear? Try another one.