Why does carbon form covalent bonds?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Which liquid (h2o, h2o + soap, or h2o + salt) has the strongest cohesion and adhesion? (need now plz)

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