A beam of particles is directed through a tank of liquid hyd

A beam of particles is directed through a tank of liquid hydrogen. If the tank’s lengthis 50 cm and the liquid density is 0.07 gram/cm3 , what is the target density (number/area) of hydrogen atoms seen by the incident particles?

Solution

target density =(mass density)(length)(avogadro number)/(atomic mass)

target density =(0.07*50*6.023*10²³)/2=10.54024*10²³ number/area