How much energy does orange light have if its wavelength is 615 nm? Use the ROYGBIV (red, orange, yellow, green, blue, indigo, violet)

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

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