Very small crystals composed of 1000 to 100,000 atoms called quantum dots are being investigated for utilize in electronic devices
a) A quantum dot was made of solid silicon in the shape of a sphere, with a diameter of 9nm compute the mass of the quantum dot, using the density of silicon 2.3 g/cm^3
b) Explain how many silicon atoms are in the quantum dot? Si atomos?
c) The density of germanium is 5.325 g/cm3 if you made a 9nm quantum dot of germanium, explain how many Ge atoms would it contain? Presume the dot is spherical. Ge atoms?