Its <span>234or238 hope dis helped</span>
Answer:

Explanation:
The formula for the velocity of the ball is

1. Velocity at time of impact

2. Velocity on rebound
The ball has enough upward velocity to reach a height of 0.86 m.

3. Acceleration

<span>You need to consider the valences of the two elements. Potassium is +1; nitrogen is -3. To balance the molecule, you need 3 potassium to one nitrogen, or K3N</span>
Answer:
chemical
Explanation:
It is breaking down the molecules. That's chemistry
Answer:a leech
Explanation: a parasitic relationship is one organism benefit on the other while the other is harmed