Answer
a) charge of the sodium ion is,
q = n e
q = 2.68 x 10¹⁶ x 1.6 x 10⁻¹⁹
q = 4.288 x 10⁻³ C
charge of the chlorine ion is,
q' = n e
q' = 3.92 x 10¹⁶ x 1.6 x 10⁻¹⁹
q' = 6.272 x 10⁻³ C
the current



b) positive ion moves toward negative electrode hence direction of will be in the direction toward negative electrode.
Answer:
A.
Explanation:
Our values are defined by,

We can express also in a vectorial way, then
no values in 
Acceleration as follow,

We know that velocity is given by,

We need to calculate for t=3, then




Our mass is 1000Kg, so the momentum is



If an atom<span>, ion, or molecule is at the </span>lowest possible energy<span> level, it and </span>its electrons<span> are said to be in the ground </span>state<span>. If it is at a higher </span>energy<span> level, it is said to be excited, or any </span>electrons<span> that </span>have<span> higher </span>energy<span> than the ground </span>state<span> are excited.</span>
Displacement can be positive OR negative. The sign implies the direction of the displacement. Negative means that is is moving to the left (sometimes called West) or down (sometimes called South); positive means that is moving to the right (sometimes called East) or up (sometimes called North).