Answer:
the trajectory depends on the velocity and mass of the ions, therefore, they should be in different quantities
Explanation:
A mass spectrometer works based on the electrical force to accelerate the ions to a certain speed and the magnetic force to give a circular trajectory, let's use Newton's second law
F = m a
q v B = m v2 / r
r = (q / m) B / v
Here we can see that the radius of curvature of the ions depends on the velocity, but also on the mass of each of them. Therefore, even when they enter with the same speed they deviate in different trajectories depending on their mass.
The heavier ions will have smaller radii than the lighter ions
Consequently, the trajectory depends on the velocity and mass of the ions, therefore, they should be in different quantities