The correct answer is 1.5 m/s
Explanation:
To find the average speed of the movement of a body, for example, the movement of the marble. The first step is to know the total distance traveled and the time of the movement. These two details can be found in the graph presented, in this, the maximum distance (vertical axis) is 15 meters and at this distance, the time is 10 seconds. Now, with this information we can use the formula Average speed = Total distance ÷ Total time.
According to this, the correct answer is 1.5 m/s. Also, meters per second or m/s is the correct unit because the distance is provided in meters (m) and the time is provided in seconds (s).
Answer: B. ΔH < 0, ΔS > 0, and ΔG < 0
Explanation:
Exothermic reactions are those in which heat is released by the system and endothermic reactions are those in which heat is absorbed by the system.
for Exothermic reaction is negative and for Endothermic reaction is positive.
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
is positive when randomness increases and is negative when randomness decreases.
When NaOH is dissolved into water, the molecules change their state from solid to aqueous and thus randomness increases. The beaker becomes warm means the reaction is exothermic
is positive and is negative Using Gibbs Helmholtz equation:
Thus 
will be negative.
Thus is positive, is negative and will be negative.
H⁺ is the nucleus of protium
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Polar liquids evaporate slower than nonpolar liquids
Answer:
Solubility
Explanation:
Solubility units that incorporate units of solution include grams of solute per 100 grams of solution or grams of solute per liter of solution. Another way to express solubility is in moles of solute per liter of solution; this ratio is called "molarity."
