The mass of aluminium foil is calculated as follows
mass = density x volume
density = 2.70 g/cm^3
volume 54 cm^3
mass of aluminium foil is therefore = 2.70 g/cm^3 x 54 cm^3 =145.8 grams
cm^3 cancel out each other
10.9 because of mass= moles/mv it’s just basic chemistry
For a solar eclipse t occur;
C. The moon is located from a line between the sun and earth
Cathode Ray experiment to figure out electrons exist -> atoms can be broken up into subatomic particles
