if a palladium nanoparticle has a density of 12.0 g/cm^3, what is the mass of the nanoparticle with a volume of 1.84 *10^-21 cm^3?

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

Fred is studying a substance that is made out of only one element. this means that

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?