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k0ka [10]
3 years ago
8

Each side of a square is increasing at a rate of 7 cm/s. At what rate is the area of the square increasing when the area of the

square is 16 cm2?
Chemistry
1 answer:
zepelin [54]3 years ago
3 0

Ans1) Each side of a square is increasing at a rate of 2 cm/s. At what rate is the area of the square increasing when the area of the square is 81 cm 2?. 2) A cylindrical tank with radius 5 m is being filled with water at a rate of 2 m 3 /min. wer:

Explanation:

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Based on the following equation, how many moles of hydrochloric acid (HCl)are needed to react with 0.44 moles of potassium
inysia [295]

Answer:

1.76 moles of HCl.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2KMnO₄ + 8HCl —> 3Cl₂ + 2MnO₂ + 4H₂O + 2KCl

From the balanced equation above,

2 moles of KMnO₄ reacted with 8 moles of HCl.

Finally, we shall determine the number of mole of HCl needed to react with 0.44 moles of KMnO₄. This can be obtained as follow:

From the balanced equation above,

2 moles of KMnO₄ reacted with 8 moles of HCl.

Therefore, 0.44 moles of KMnO₄ will react with = (0.44 × 8)/2 = 1.76 moles of HCl.

Thus, 1.76 moles of HCl is needed for the reaction.

5 0
3 years ago
Number 3 pls and thank u
Makovka662 [10]

The statement which is not true is as follows:

  • The repulsive force between electrons on different atoms does not matter at all.

Thus, the correct option is C.

<h3>What is Equilibrium?</h3>

An equilibrium may be defined as the condition in which both the reactants and products are present in concentrations that have no additional propensity to alter with time so that there is no noticeable transformation in the possessions of the system.

The causation of repulsive force was thought to be made by the overlap of atomic orbitals and in between the electrons of diverse atoms, it matters a lot.

The equilibrium distance between nuclei of two covalently bonded atoms is called the bond length of that atom. It is the atomic separation at equilibrium.

Equilibrium occurs when the attractive and repulsive forces neglected the effect of each other in a specific state.

Therefore, it is well described above.

To learn more about Covalent bonds, refer to the link:

brainly.com/question/11651796

#SPJ1

6 0
2 years ago
Find the potential difference required to accelerate protons from rest to 10% of the speed of light. (at this point, relativisti
elixir [45]
I don't know much about the potential difference but I certainly can calculate the energy of the proton <span>from rest to 10% of the speed of light.

Special relativity tells us that "</span><span>the energy needed to accelerate a particle (with mass) grow super-quadratically when the speed is close to c, and is ∞ when it is c."

Expressed the theory in equation is as follows:
</span>
ENERGY  = rest mass × speed of light squared / (1−(“percent of speed of light”)squared ) <span> = mc2/(1-("percent of speed of light")2)
</span>
Just plug-in the values and you can now have the answer what you are looking for!
5 0
4 years ago
You are on a field trip to a nearby lake for biology class and want to perform a quick analysis of the water’s approximate pH le
umka21 [38]
The easiest way to approximate ph level is the ph paper because there are no exprimentation required and it is very handy. so it is the best way to approximate the ph level of a lake, especially when you are outdoors, and it is just an initial reading of the ph. so ph paper will do.
4 0
3 years ago
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What is the SI unit for force?
Naily [24]

Answer: The SI unit of force is the newton, symbol N.

Explanation:

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