What type of chemical bond holds 2Na+ and O2-together in Na20?
a Metallic Bond
blonic Bond
C Molecular Bond
d Van der Waals' force
e Covalent Bond

Two things that biomedical has invented or innovated

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume