) A laser with a total energy of 200 mJ has a wavelength of 765 nm. Calculate a) The frequency of this laser in MHz

b) The number of photons that this laser contain.

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

How do you convert 4 mmol of bromobenzene to ml?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98