4) a. Use the periodic table to calculate the molar mass of ammonia, NH,. b. A cleaning bottle contains 83.1 g of ammonia. How many molecules of ammonia are in the bottle?
Giving 30 points because my chemistry teacher sucks and I need to show work

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

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.