Alpha particles are relatively heave and can be stopped by a sheet of paper.
35
Because there’s 7 carbon atoms in every molecule of artificial sweetener
And if you have 5 molecules of that
7x5 =35
Answer:
1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.
2. J.J Thomson discovered electrons by conducting cathode ray experiment.
3. Dalton postulated that matter is made up of small particles caled atoms
i really dont know and im so so so so sorry
