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Troyanec [42]
3 years ago
12

Potassium metal and chlorine gas combine in a reaction to produce an ionic compound. What is the correct balanced equation for t

his reaction?
Chemistry
1 answer:
Alisiya [41]3 years ago
6 0

Answer:

2K (s) + Cl₂ (g) ⇒ 2KCl (s)

Explanation:

Potassium and chlorine gas combine to form potassium chloride which is an ionic compound. The reaction is a type of combination reaction in which chlorine is being added to the metal, potassium.

Potassium reacts violently with the chlorine which is yellowish green in color to produce white solid of potassium chloride.

The balanced reaction is shown below as:

2K (s) + Cl₂ (g) ⇒ 2KCl (s)

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Consider a hypothetical reaction in which a and b are reactants and c and d are products. if 25 grams of a completely reacts wit
fomenos

According to law of conservation of mass, the mass can neither be destroyed nor created in a chemical reaction.  The mass of reactants and mass of products are equal in a chemical reaction.

The reaction between A and B (reactants) to form C and D (products) is given as:

A+B\rightarrow C+D

The mass of A = 25 g (given)

The mass of B = 26 g (given)

The mass of reactant = mass of A + mass of B

Substituting the values:

The mass of reactant = 25 g + 26 g = 51 g

The mass of C = 14 g

Let the mass of D = X g

So, the mass of product = mass of C  + mass of D

Substituting the values:

the mass of product = (14 +X) g

According to law of conservation of mass:

the mass of reactant = the mass of product

Substituting the values,

51 g = (14 +X) g

X = 51 -14 g

X = 37 g

Hence, the amount of D produced in the reaction is 37 g.

6 0
3 years ago
What is a system called when neither energy nor matter is exchanged between the system and the surroundings?
Evgesh-ka [11]

Answer:

Isolated system

Explanation:

If we are talking about theremodynamic system answer is ISOLATED SYSTEM

If we talking about mechanic annswer is CLOSED SYSTEM

CLOSED SYSTEM IN CLASSICAL MECHANICS = ISOLATED SYSTEM IN THERMODYNAMICS.

4 0
3 years ago
Why do elements in group 8A (the noble gases) tend not to gain or lose electrons?
Neko [114]

Answer:

The noble gases have 8 valence electrons in their outermost electron shell. In other words, they have full out shells. These elements are highly stable.

5 0
3 years ago
consideras util conocer las propiedades extensivas e intensivas de los insumos utilizados para la elaboración de producto ¿por q
Brums [2.3K]

Answer:

Explanation:

No.

Las propiedades físicas de los materiales y sistemas a menudo se pueden clasificar como intensivas o extensivas, según cómo cambia la propiedad cuando cambia el tamaño (o extensión) del sistema. Según la IUPAC, una cantidad intensiva es aquella cuya magnitud es independiente del tamaño del sistema, mientras que una cantidad extensiva es aquella cuya magnitud es aditiva para los subsistemas. Esto refleja las ideas matemáticas correspondientes de media y medida, respectivamente.

Una propiedad intensiva es una propiedad a granel, lo que significa que es una propiedad física local de un sistema que no depende del tamaño del sistema o de la cantidad de material en el sistema. Los ejemplos de propiedades intensivas incluyen temperatura, T; índice de refracción, n; densidad, ρ; y dureza de un objeto.

Por el contrario, propiedades extensivas como la masa, el volumen y la entropía de los sistemas son aditivas para los subsistemas porque aumentan y disminuyen a medida que crecen y se reducen, respectivamente.  

Estas dos categorías no son exhaustivas, ya que algunas propiedades, físicas no son exclusivamente intensivas ni extensivas. Por ejemplo, la impedancia eléctrica de dos subsistemas es aditiva cuando, y solo cuando, se combinan en serie; mientras que si se combinan en paralelo, la impedancia resultante es menor que la de cualquiera de los subsistemas.

¡Espero haberte ayudado!  :)

7 0
2 years ago
Data has been collected to show that at a given wavelength in a 1 cm pathlength cell, Beer's Law for the absorbance of Co2 is li
White raven [17]

Answer : The concentration of a solution with an absorbance of 0.420 is, 0.162 M

Explanation :

Using Beer-Lambert's law :

A=\epsilon \times C\times l

As per question, at constant path-length there is a direct relation between absorbance and concentration.

\frac{A_1}{A_2}=\frac{C_1}{C_2}

where,

A = absorbance of solution

C = concentration of solution

l = path length

A_1 = initial absorbance = 0.350

A_2 = final absorbance = 0.420

C_1 = initial concentration = 0.135 M

C_2 = final concentration = ?

Now put all the given value in the above relation, we get:

\frac{0.350}{0.420}=\frac{0.135}{C_2}

C_2=0.162M

Thus, the concentration of a solution with an absorbance of 0.420 is, 0.162 M

4 0
3 years ago
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