SO3 is an empirical formula for which of the following?

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion