How many moles of water, h2o contain 2.0x10^22 molecules of water

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )