Answer:
ΔH of solution = ΔH₁ + ΔH₂ + ΔH₃
Explanation:
- Assume that the solution is formed via dissolving solute A in the molecules of Solvent B.
<em>The formation of the solution goes through 3 steps:</em>
1- The dissociation of the solute A particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₁ > 0 beause this is an endothermic process.
2- The dissociation of the solvent B particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₂ > 0 because this is an endothermic process.
3- The particles of the solvent and solute are holding together. It has ΔH₃ < 0 because this is an exothermic process.
- The enthalpy of the solution (ΔH of solution) will be equal to the sum of the enthalpy change of the three steps.
- ΔH of solution = ΔH₁ + ΔH₂ + ΔH₃.
Answer:
The answer to your question is the second option
Explanation:
Reaction
Al₂(SO₄)₃ + KOH ⇒ Al(OH)₃ + K₂SO₄
Process
1.- Check if the reaction is already balanced
Reactants Elements Products
2 Aluminum 1
3 Sulfur 1
13 Oxygen 7
1 Potassium 2
1 Hydrogen 3
The reaction is unbalanced
2.- Balance the reaction
1Al₂(SO₄)₃ + 6KOH ⇒ 2Al(OH)₃ + 3K₂SO₄
Reactants Elements Products
2 Aluminum 2
3 Sulfur 3
18 Oxygen 18
6 Potassium 6
6 Hydrogen 6
Now the reaction is balanced. The coefficients are 1, 6, 2, 3.
We can actually deduce here that the important points to consider when conducting the described data collection are:
- The exact temperature at which the crickets chirped less.
- The exact temperature the crickets chirped more.
- Other forces that influence the chirping of the crickets e.g: weather condition, human factor, environmental noise, etc.
<h3>What is data collection?</h3>
Data collection is actually known to be the process of collecting data, information or statistics for the purpose of research and documentation.
Data collection is actually important when research projects are being carried out.
We see that it is very important to note that when carrying out the data collection in Pinky's science fair project, the above important points should be noted or observed.
Learn more about data collection on brainly.com/question/26711803
#SPJ1
Answer:
Global warming is causing global mean sea level to rise in two ways. First, glaciers and ice sheets worldwide are melting and adding water to the ocean. ... A third, much smaller contributor to sea level rise is a decline in the amount of liquid water on land—aquifers, lakes and reservoirs, rivers, soil moisture.
Explanation:
Answer:
The solution is basic
Explanation:
Low pH means that a solution is acidi while low pOH means that a solution is basic.