How many grams are in 3.1 x 10^11 atoms of chlorine

One or more substances changing into one or more substances is an example of a

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?

In pqr m< p=60 m< q= 30 and m