The strength of an acid or base depends on the degree on of ionization in water. the graph represents a

HA in the graph represents a weak acid.

Is HA an acid or a base?

Apply the Arrhenius Theory of Acids and Bases.

The equation in the picture shows that HA ionizes in water to produce ions. By the Arrhenius Theory of acids and bases, HA is an acid.

Is HA a weak acid or a strong acid?

Both weak and strong Arrhenius acids ionize in water to produce (or equivalently ) and a conjugate ion. However,

As seen in the bar chart, there are plenty of HA left after ionization. HA ionizes only partially. Also, the equation shows a two-sided arrow. As a result, HA is a weak acid.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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