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vivado [14]
3 years ago
9

For question #17, use the following picture:

Physics
1 answer:
Serhud [2]3 years ago
6 0

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

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I’ll mark you as brinlist please help.
Ede4ka [16]

Answer:

245 divided by 5.14=47.6653696 or 47.66

Explanation:

8 0
3 years ago
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Explique ¿por que un objeto que tiene energía es capaz de realizar un trabajo?
Nana76 [90]
By striking another object that is free to move, the moving object can exert a force and cause the second object to shift its position. While the object is moving, it has the capacity for doing work. Energy means the ability to do work, so all moving things have energy by virtue of their motion.




Translation: Al golpear otro objeto que se puede mover libremente, el objeto en movimiento puede ejercer una fuerza y ​​hacer que el segundo objeto cambie de posición. Mientras el objeto se mueve, tiene la capacidad de realizar un trabajo. Energía significa la capacidad de realizar un trabajo, por lo que todas las cosas en movimiento tienen energía en virtud de su movimiento.

3 0
2 years ago
A volcano erupts and launches a chunk of hot magma horizontally with a speed of 252 m/s. The magma travels a horizontal distance
ArbitrLikvidat [17]

Answer:

The value is v_y  =  -48.61 \ m/s

Explanation:

From the question we are told that

   The horizontal speed is  u_x  = 252 \  m/s

    The horizontal distance is  d = 1250 \ m

Generally the time taken by the hot magma in air before landing is mathematically represented as

       t = \frac{d}{u_x}

=>    t = \frac{ 1250 }{252}

=>    t = 4.96 \  s

Generally the initial vertical velocity of the magma when it was lunched is  

    u_y = 0 \ m/ s

Then the final velocity of the magma when it hits the ground is mathematically represented s

       - v_y  =  u_y + gt

Here the negative sign mean that the direction of the velocity is towards the negative y -axis

So  

        - v_y  =  48.61 \ m/s

=>     v_y  =  -48.61 \ m/s

7 0
2 years ago
If oxygen and steel wool are combined is it a physical change or chemical change?
Anon25 [30]

Answer:

I think it would be a chemical change.

Explanation:

Because a physical would be like crushing it or something along that line.

4 0
3 years ago
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What are the six different character traits scientists should have?
frozen [14]

careful observation, curiosity, logic, creativity, skepticism, and objectivity

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2 years ago
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