How do we measure the average kinetic motion of molecules in a solution?

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?

What is the percentage composition of carbon in the compound ch4

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?