Which of these best describes the bonding between oxygen and hydrogen in the water molecule?

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

What is the formula of the ionic compound composed of calcium cations and chloride anions

Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?