What happens when you put sugar into vinegar

How much energy is needed to turn 23 g of water completely into steam if it starts at a temperature of 8.0oC?

asambeis [7]

Answer:

69% energy

Explanation:

6 0

3 years ago

Calculate the value of Key in the following reaction if the equilibrium concentrations are

MAXImum [283]

Answer:

The value of the equilibrium constant Kc is 5.45

Explanation:

The "Law of Mass Action" states:

"For a reversible reaction in chemical equilibrium at a given temperature, it is true that the product of the concentrations of the products raised to the stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients is a constant."

This constant was called the equilibrium constant. For a reaction:

aA + bB ⇄ cC + dD

the equilibrium constant Kc is:

$Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }$

In this case, the balanced reaction is:

2 H₂S → 2 H₂ + S₂

So, the equilibrium constant Kc is:

$Kc=\frac{[H_{2} ]^{2} *[S_{2} ] }{[H_{2} S]^{2} }$

The equilibrium concentrations are

[H₂S] =0.25 M
[H₂]= 0.88 M
[S₂]= 0.44M

Replacing in the definition of equilibrium constant:

$Kc=\frac{(0.88 M)^{2} *0.44 M }{(0.25 M)^{2} }$

Solving:

Kc= 5.45

The value of the equilibrium constant Kc is 5.45

7 0

3 years ago

1. El metodo cientifico pretende sistematizar el proceso de obtención del conocimiento cientifico, evitar la subjetividad en los

____ [38]

Answer:

La afirmación es verdadera.

Explanation:

El método científico es un método de investigación usado principalmente en la producción de conocimiento en las ciencias y se define como un procedimiento para tratar un conjunto de problemas. En ciencia, el método científico es la estrategia para la investigación y la exploración de lo desconocido.

Por lo que el método científico es el procedimiento mediante el cual es posible alcanzar un conocimiento objetivo de la realidad, tratando de dar respuesta a las interrogantes acerca del orden de la naturaleza.

Para ser científico, un método de investigación debe basarse en la empírica y en la medición, sujeto a los principios específicos de las pruebas de razonamiento.

El método científico se basa en la reproducibilidad, es decir, la capacidad de repetir un determinado experimento, en cualquier lugar y por cualquier persona, y la refutabilidad, es decir toda proposición científica tiene que ser susceptible de ser falsada o refutada.

Entonces la afirmación es verdadera.

6 0

3 years ago

Given the starting solution had a concentration of 1.25 m, how many moles of co[h2o]6cl2 were available in the amount of startin

siniylev [52]

Molarity of solution is defined as number of moles present in one liter solution. Mathematically, it is expressed as
Molarity = $\frac{\text{number of moles}}{\text{volume of solution(l)}}$

Thus, if 1 mole of solute is present in 1 liter solution, molarity of solution is 1 M.

In present case, initial conc, of solution was 1.25 M.

∴ Number of moles of co[h2o]6cl2 available initially = 1.25 mole, if the solution is 1 liter

3 0

3 years ago

What makes the shadow during a solar eclipse

Damm [24]

Well, if you have a light bulb (turned on) n u put a little gulf ball in front of it it will make a shadow.
In this case the light bulb is the Sun and the gulf ball is the Moon.
So the Moon causes the shadow because it covers the light.

I really hope my explanation helps you out!
@SamSamySamantha
*muaa* :*

7 0

3 years ago