When a solution of KOH is neutralized by hydrochloric acid, the solution gets hot.
Calculate the change in heat of the solution (in J).
Mass of combined solution = 45.0 g
Temperature change of the solution = 23.5 K
Specific heat capacity of the solution = 4.18 J/g.K
Give your answer to three significant figures.
J
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Explanation:

Temperature change of the solution = 23.5 K

Specific heat capacity of the solution = 4.18 J/g.K

Give your answer to three significant figures.

J

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1) See explanation below, 2) False.

Explanation:

1) The velocity of an object is equal to the instaneous rate of change of its position vector in time with respect to a reference point. Each component of the vector represents the rate of change of the position component in time.

2) An object moving in a circle at constant speed has a constant magnitude but a changing direction, meaning that velocity vector is not constant. Hence, the statement is FALSE.