The distance from one crest to another crest or from one trough to another trough is called wavelength. Hope it helps
Answer: with? i can help:))
Explanation:
hmu love
# moles = mass (g) / Mr (relative atomic mass)
# moles = 458 / ((23*2)+32+(16*4)
# moles= 458 / 142 = 3.2253521126760...
= 3.23 moles
Protons .because electron has negative charge and proton has positive charge.
