Yes, the data from mass spectrometry has helped modern scientists to make modifications to Dalton's model.
Dalton's model consisted of a single atom and that basically the atom is the smallest object. At the time, no discovered what are inside of atoms.
Atoms are made up of small particles, protons, neutrons and electrons. A mass spectrometer is an instrument that is able to see what is inside an atom. With this item, scientists have proved that atoms are not the smallest in the world cause the objects in them are smaller.
I believe it is true because if speaker is too complex he/she would tend to lose the audience. Hope this is correct :)
Southern American accents sound like the stereotypical gay accent tbh. But the Northern American accents sound friendly although my mum thinks it's like german accent (assertive I supposed?) and my friend thinks it's loud and mouthful.
A or C. If you rehearse your timing you will get better at it. Also C because it gives you a set time to do that slide after your first attempt.
