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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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Why freezer is made in the upper part of refrigrator
svp [43]
<h2>Question</h2>

why freezer is made in the upper part of refrigrator

<h2>✒ Answer</h2>

the cold air produced from it is denser than the warmer air in the bottom

<h3>Explaination</h3>

Freezer is normally provided at the top of the refrigerator, because density of the cold air is high compared to the hot air. In a refrigerator the air contacts with the cooling coil and gets cooling.Because of the high density the cold air gets down and the warm air/hot air moves upward and gets cooling from the cooling coil/evaporator coil. This process is repeated. If the Freezer is provided at the bottom place of the refrigerator, the cold air can't to move full area of the refrigerator. So the freezer is normally provided at the top at the refrigerator

4 0
2 years ago
When a pitcher throws a baseball, it reaches a top speed of 39 m/s. if the
Aliun [14]

From the calculation, the acceleration of the body is 26m/s^2.

<h3>What is motion under gravity?</h3>

When an object is thrown up or down, the motion of the body is influenced by the gravitational pull on the body.

Now;

Given that;

v = 39 m/s

t = 1.5 s

u = 0 m/s

a = ?

v = u + at

v = at

a = v/t

a = 39 m/s/1.5 s

a = 26m/s^2

Learn more about acceleration:brainly.com/question/12550364

#SPJ1

4 0
2 years ago
While riding a skateboard, Nina ran into a rough patch of pavement, but she thought she could ride right over it. Instead, the s
Jet001 [13]

Answer:

inertia

Explanation:

While riding a skateboard, Nina ran into a rough patch of pavement, but she thought she could ride right over it. Instead, the skateboard stopped but Nina didn't. Her (Blank) kept her moving forward, so she fell off the skateboard.inertia

3 0
3 years ago
Read 2 more answers
The force exerted by the machine is the _____
Neporo4naja [7]
Output Force, hope this helps.
4 0
3 years ago
13) A mass attached to the free end of a spring executes simple harmonic motion according to the equation y = (0.50 m) sin (18π
Kitty [74]

Hi there!

The period is given by:

T = \frac{2\pi}{w}

T = Period (sec)

w = angular frequency (rad/sec)

According to the equation for SHM in terms of position:

y(t) = Asin(ωt + φ)

A = Amplitude (m)

ω = angular frequency (rad/sec)

t = time (sec)

φ = phase angle

In this instance, the angular frequency is given as 18π.

Plug this value into the equation for T:

T= \frac{2\pi}{18\pi} = \frac{1}{9} = \boxed{0.111 s}

4 0
3 years ago
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