What is the reaction of 3 CaCl2 + 2 Na3PO4 → Ca3 (PO4 )2 + 6 NaCl ?

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?

All of the following are part of the biosphere except

Name the intersection of plane bpq and plane cpq.