How would the empirical formula be affected if the decanted solution was not colorless

Which best describes why nh4+ can form an ionic bond with ci-?

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)