Which of the following best represents and explains the
formula for a compound made from nitrogen and hydrogen?
(5 points)
NH4, because nitrogen needs four electrons, and each
hydrogen needs one electron
NH4, because nitrogen needs one electron, and each hydrogen
needs four electrons.
NH3, because nitrogen forms a single bond with each hydrogen
atom.
NH3, because nitrogen forms a triple bond with each hydrogen
atom

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.