a truck is parked at the bottom of a hill and moves from the bottom of a hill and parks at the top compared to when it was parked at the bottom of the hill. it's new position the truck now has, please answer this question​

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?