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Vikentia [17]
2 years ago
9

What would the products of a double-replacement reaction between Na2S

Physics
1 answer:
MAVERICK [17]2 years ago
8 0

Answer:

A. NaF and MgS

Explanation:

The reaction equation is given as:

             Na₂S  +  MgF₂  →   2NaF  + MgS

The product of this reaction is  NaF and MgS.

In a double displacement reaction there is an actual exchange of partners to form new compounds. This reaction takes place between ionic compounds.

The driving force for the reaction is:

  • formation of an insoluble precipitate
  • formation of water or any other non-ionizing compound
  • liberation of a gaseous product.
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3 years ago
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A 30 g bullet moving a horizontal velocity of 500 m/s comes to a stop 12 cm within a solid wall. (a) what is the change in the b
Sidana [21]
M = 30 g = 0.03 kg, the mass of the bullet
v = 500 m/s, the velocity of the bullet

By definition, the KE (kinetic energy) of the bullet is
KE = (1/2)*m*v²
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Because the bullet comes to rest, the change in mechanical energy is 3750 J.

The work done by the wall to stop the bullet in 12 cm is
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If energy losses in the form of heat or sound waves are ignored, then
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0.06F = 3750
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Answer:
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7 0
3 years ago
A person throws a ball straight up in the air. The ball rises to a maximum height and then falls back down so that the person ca
Lana71 [14]

Answer:

The acceleration is about 9.8 m/s2 (down) when the ball is falling.

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State the equation of momentum impulse theorem.
Paladinen [302]

Answer:

J = Δp

Explanation:

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J = Δp

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