Answer:
Ions form when an atom gains or loses electrons in order to find a more stable configuration.There are two types of ions cations and anions
Explanation:
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Answer:
V = 1.35 m/s
Explanation:
Given that,
Mass of a railroad car, m₁ = 25,000 kg
Initial speed of a railroad car, u₁ = 4.5 m/s
Initial speed of railroad car that is full of coal, u₂ = 0 (at rest)
We need to find the final velocity of the two railroad cars if they move as one after the collision. It is a case of inelastic collision in which the momentum remains conserved. Using the conservation of linear momentum as follows :
V is the final speed and u₂ = 0
So, the final velocity of the two railroad cars is 1.35 m/s.
<span>Two factors that determine whether a reaction will occur spontaneously are entalpy and entropy.</span>
A. the question has a narrow focus