Charles' law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated.
No' of molecules divide by avogadro number , 6×6.023×10^23 so (2.2×10^22)÷(6.023×10^23)
= 0.03653 moles
moles × Molar mass = mass
n×Mr=m
0.03653×40 = 1.46 grams
Li2O is the formula for <span> lithium oxide</span>
All three of them i know i already did that