Which of the following is not a cation?
Ca2+
mercurous ion
iron(III) ion
sulfate

Evaluate this exponential expression,8. (2 + 3)2 – 42

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?

1) this is the structure in the cell nucleus that houses a cell's genetic information