Explanation:
18. __Double displacement__ 2LiBr + Pb(NO₃)₂ → PbBr₂ + 2LiNO₃
In a double displacement reaction, there is an actual exchange of partners to form new compounds.
The driving condition for this kind of reaction are:
- formation of an insoluble compound called precipitate
- formation of water or any other non-ionizing compound
- liberation of a gaseous product.
Learn more:
Precipitation reaction brainly.com/question/1870098
19. ___Single displacement___ Fe + 2HCl → FeCl₂ + H₂
In a single displacement reaction, one substance replaces another.
- The replacement of a metallic ion in solution by a metal higher in the activity series than the metal in solution falls into this category.
- The positions of the two elements in the activity series serves as the driving force.
Learn more:
Chemical reactions brainly.com/question/3953793
20. ___Synthesis___ CaO + H₂O → Ca(OH)₂
Synthesis is a combination reaction
- This reaction involves the formation of a single product from two or more reactants.
- A compound forms from the union of two or more reactants
- The large and negative heat of formation of the product is the driving force for this reaction.
Learn more:
Synthesis brainly.com/question/2761166
21. ______Decomposition__ NiCl₂ → Ni + Cl₂
In a decomposition or cracking reaction, two or more product forms from a single reactant.
The breakdown of a compound into its component individual elements or other compounds fall into this category.
- The driving force for this reaction is the high heat of formation of the compound and the extreme instability of the compound.
- A stable compound can also be decomposed on heating and applying pressure.
Learn more:
Thermal decomposition brainly.com/question/11181911
#learnwithBrainly
Answer:
Explanation:
Acceleration can be found by dividing the change in velocity by the time.
(<em>v </em>is the final velocity, <em>u</em> is the initial velocity, <em>t </em>is the time).
The velocity increased from 22 m/s to 236 m/s in 5 seconds. Therefore:
Substitute the values into the formula.
Subtract in the numerator.
Divide.
The acceleration of the object is <u>42.8 meters per square second.</u>
Answer:
Speed: 3, 4, 5, 6. Distance: 1, 2, 3, 4, 5
The word “you” shouldn’t be used, and I learned the I statement to have your feelings stated, then when, then because, and finally a want. So, to correct this, an appropriate statement would be “ I feel misunderstood when I am treated like a child because my curfew is set for 9:00 pm on the weekends and I want to be seen as your equal and as though you are not superior to me. You can use the word “you” after stating you want something out of the other person.
Answer:
Neutral comb is charged through induction.
Explanation:
The local charging of the comb is caused because of induction. The electron is pushed in the comb to the away side of the charged particle because of the negative charge which makes the close part positively charge.
Then after that when the observer move the comb away from the charge then the electron of the comb is redistributed.
