What conclusions were made from the observations of Gold foil experiment?

Explain the postulates of Bohr’s atomic model.

State the Gay Lussac’s law of combining volumes, explain with an illustration.

Calculate the volume of oxygen required for the complete combustion of 20 cm³ of methane[CH_4(g) +2O_2⟶ CO_2(g) +2H₂O_(g)]

Calculate the mass of a proton, given its charge = + 1.60 \(\times\)10⁻¹⁹ C charge / mass = 9.58 \(\times\) 10⁷ C kg^-1