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Ket [755]
3 years ago
11

Which chemical equation represents a double replacement reaction?

Physics
1 answer:
liq [111]3 years ago
5 0

D. NaOH + HCI NaCl + H,0

Explanation:

The last option is a double displacement/replacement reaction.

This reaction is a neutralization reaction in which an acid combines with a base to produce salt and water only.

       NaOH    +   HCl   →   NaCl  + H₂O

  • A double displacement reaction is one that occurs between ionic compounds.
  • In this reaction, there is an actual exchange of reaction partners.

One of the following conditions serves as a driving force;

  • Formation of water or any other non-ionizing compound
  • Liberation of gases
  • Formation of a precipitate

learn more:

Precipitate formation brainly.com/question/8896163

#learnwithBrainly

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In Part C, how would the effects differ if you connected the galvanometer to the primary coil and the battery/switch to the seco
Katen [24]

N₂ / N₁ = 13.3

A transformer is a device that changes the voltage in the primary, causing a voltage to be induced in the secondary. The expression for this voltage ratio is

ΔV₂ = N₂ /N₁ ΔV₁

where N is the number of windings on each side and V2 and V1 are the voltages in the secondary and primary, respectively.

They state that the primary voltage in this instance is 9.0 V and the secondary voltage is 120 V.

ΔV₂ /ΔV₁ = N₂ / N₁

N₂ / N₁ = 120/9

N₂ / N₁ = 13.3

Learn more about  voltage here brainly.com/question/16774947

#SPJ4.

A 9.0-V battery (with nonzero resistance) and switch are connected in series across the primary coil of a transformer. The secondary coil is connected to a light bulb that operates on 120 V. Determine the ratio of the secondary to primary turns needed for the bell's transformer. Determine the ratio of the secondary to primary turns needed for the bells transformer. Ns/Np=?

4 0
2 years ago
Molecules are bonded together in which of the following states of matter?
Inessa05 [86]
Solid is one of the three main states of matter, along with liquid and gas. Matter is the "stuff" of the universe, the atoms, molecules and ions that make up all physical substances. In a solid, these particles are packed closely together and are not free to move about within the substance.
6 0
3 years ago
Explain the roles of piston valve of a water pump.​
Shtirlitz [24]

Answer:

The upstroke of the piston draws water, through a valve, into the lower part of the cylinder. On the downstroke, water passes through valves set in the piston into the upper part of the cylinder. On the next upstroke, water is discharged from the upper part of the cylinder via a spout.

Explanation:

4 0
3 years ago
Use vector notation to describe the points that lie in the configuration. (Let s and t be elements of the Reals). the plane span
aniked [119]

Answer:

The answer is l(s, t) = (2s,7s + 2t,7t)

Explanation:

A general vector notation that can describe the points which lie in the configuration of the plane spanned by v1 and v2, is evaluated, thus:

V = v1 + v2

Where s and t are the elements of v1(2,7,0) and v2(0,2,7), respectively, and projected in x, y and z coordinates, we have:

V = sv1 + sv2, implying that:

V = (2sx + 7sy + 0sz) + (0tx + 2ty + 7tz)

Or, V= (2sx + 7sy) + (2ty + 7 tz)

Therefore, V = (2s,7s + 2t,7t)

and l(s, t) = (2s,7s + 2t,7t).

5 0
3 years ago
A rocket is launched with a velocity of 30 m/s at 40° to the horizontal. How far will it
steposvetlana [31]

Answer:

A. Rocket A will travel farther horizontally than rocket B.

Explanation:

This is because from the x axis, 40 m/s at 90 degrees travels directly vertical. 40 m/s at 70 degrees is slightly horizontal, so it will travel further horizontally.

8 0
3 years ago
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