The perimeter of a square whose length is 12.0 m is 48 cm.
<h2>Further Explanation </h2><h3>Area </h3>
- Area is a measure of how much space is occupied by a given shape.
- Area of a substance is determined by the type of shape in question.
For example;
- Area of a rectangle is given by; Length multiplied by width
- Area of a triangle = 1/2 x base x height
- Area of a circle = πr². where r is the radius of a circle,
- Area of a square = S², Where s is the side of the square.etc.
<h3>Perimeter </h3>
- Perimeter is defined as the distance along a two dimension shape. Perimeter of different shapes is given by different formulas
For example;
- The perimeter of a rectangle = 2(length+width)
- The perimeter of a triangle = a+b+c; where a, b and c are the sides of the triangle. etc.
In this case;
We are given one side of a square as 12.0 cm
But Perimeter of a square is given by; 4 × s
Thus; Perimeter = 4 × 12 units
= 48 units
Keywords; Perimeter, Area
<h3>Learn more about;</h3>
Level: Middle school
Subject; Mathematics
Topic: Area and Perimeter
Answer: Option (b) is the correct answer.
Explanation:
Buffere is defined as the solution to whom when an acid or base is added then it resists any in change in pH of the solution.
This is because a buffer has the ability to not get affected by the addition of small amounts of an acid or a base. So, basically it keeps the concentration of both hydrogen ions and hydroxides equal. As a result, it helps in maintaining the pH of the solution.
And, the capacity of a buffer solution to resist the change is known as buffer capacity.
Thus, we can conclude that buffering capacity refers to the extent to which a buffer solution can counteract the effect of added acid or base.
The mass of melted gold to release the energy would be 3, 688. 8 Kg
<h3>How to determine the mass</h3>
We have quantity of energy is;
Q = n × HF
n = number of moles
HF = heat of fusion
Let's find number of moles
235.0 = n × 12.550
number of moles =
= 18. 725 moles
Note that molar mass of Gold is 197g/ mol
Number of moles = mass/ molar mass
Mass = number of moles × molar mass
Mass = 18. 725 × 197
Mass = 3, 688. 8 Kg
Thus, the mass of melted gold to release the energy would be 3, 688. 8 Kg
Learn more about molar heat of fusion here:
brainly.com/question/15634085
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If by 2.5 you mean molarity
Answer: The value of equilibrium constant for the given reaction is, ![7.2\times 10^{-3}](https://tex.z-dn.net/?f=7.2%5Ctimes%2010%5E%7B-3%7D)
Explanation:
The given chemical equation is:
; ![K_p=1.9\times 10^4](https://tex.z-dn.net/?f=K_p%3D1.9%5Ctimes%2010%5E4)
We need to calculate the equilibrium constant for the chemical equation, which is:
; ![K_p'=?](https://tex.z-dn.net/?f=K_p%27%3D%3F)
If the equation is revered then the equilibrium constant will be the reciprocal of the reaction.
If the equation is half then the equilibrium constant will be square-root of the reaction.
The value of equilibrium constant for the given reaction is:
![K_p'=(\frac{1}{K_p})^{1/2}](https://tex.z-dn.net/?f=K_p%27%3D%28%5Cfrac%7B1%7D%7BK_p%7D%29%5E%7B1%2F2%7D)
![K_p'=(\frac{1}{1.9\times 10^4})^{1/2}](https://tex.z-dn.net/?f=K_p%27%3D%28%5Cfrac%7B1%7D%7B1.9%5Ctimes%2010%5E4%7D%29%5E%7B1%2F2%7D)
![K_p'=7.2\times 10^{-3}](https://tex.z-dn.net/?f=K_p%27%3D7.2%5Ctimes%2010%5E%7B-3%7D)
Hence, the value of equilibrium constant for the given reaction is, ![7.2\times 10^{-3}](https://tex.z-dn.net/?f=7.2%5Ctimes%2010%5E%7B-3%7D)