HKDSE Chemistry Question Review (2020-11-18)
16/11/20 00:18
16/11/20 00:30
16/11/20 00:35
Enrichment reading: Borax as fire ant deterrents.
17/11/20 15:39
Read the following clip:
What is the chemical formula of concrete?
CaSO4 ‧ n(H2O)
What will the snails excrete?
H2SO4(l). Because protons are required to digest fleshes (peptide bonds) as snails are omnivores.