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Naddik [55]
4 years ago
14

What is an indicator?

Chemistry
1 answer:
Anna [14]4 years ago
7 0

a thing, especially a trend or fact, that indicates the state or level of something.

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Un recipiente cerrado, de 4,25 L, con tapa móvil, contiene H2S(g) a 740 Torr y 50,0°C. Se introduce en ese recipiente N2(g) a te
yulyashka [42]

Answer:

n_{N_2}=6.41mol

Explanation:

¡Hola!

En este caso, teniendo en cuenta la información dada por el problema, inferimos que primero se debe usar la ecuación del gas ideal con el fin de calcular las moles de gas que se encuentran al inicio del experimento:

PV=nRT\\\\n=\frac{RT}{PV} \\\\n=\frac{0.08206\frac{atm*L}{mol*K}*(50.0+273.15)K}{740/760atm*4.25L}\\\\n=6.41mol

Seguidamente, usamos la ley de Avogadro para calcular las moles finales, teniendo el cuenta que el volumen final es el doble del inicial (8.50 L):

n_2=\frac{6.41mol*8.50L}{4.25L}\\\\n_2=12.82mol

Quiere decir que las moles de N2(g) que se agregaron son:

n_{N_2}=12.81mol-6.41mol\\\\n_{N_2}=6.41mol

¡Saludos!

8 0
3 years ago
What is electronegativity?
Makovka662 [10]
C. a measurement of the ability of an atom to attract an electron
4 0
3 years ago
Consider the laboratory on HPLC analysis of components in diet soft drinks. Your standard solutions for caffeine were prepared f
borishaifa [10]

Answer:

i dont know they made me do it! sorry!!!

Explanation:

7 0
3 years ago
Define thermal conductor
user100 [1]

Answer: A thermal conductor is a material that allows energy in the form of heat, to be transferred within the material, without any movement of the material itself.

Explanation:

4 0
4 years ago
If the inital pressure of an ideal gas at a temperature of 344 K is 0.917 atm, what is the pressure of the gas at 322 K?
Gennadij [26K]

Answer:  P2 = 0.858 atm

Explanation:

Use the combined gas law:  P1V1/T1 = P2V2/T2,

where the subscripts are the initial (1) and final (2) states.  Temperature must be in Kelvin.  We want P2, so rearrange the equation to solve for P2:

P2 = P1(V1/V2)(T2/T1)

Note how I've arranged the volume and temperature values:  as ratios.  Now it is easy to cancel units and see what is going to happen to the pressure if we lower the temperature.  Since the pressure change is a function of (T2/T1), and we are lowering the temperature (T2), we'd expect this to decrease the pressure.

No information is given on volume, so we'll assume a convenient value of 1 liter.  Now enter the data:

P2 = (0.917atm)*(1)*(322K/344K)

P2 = 0.858 atm

8 0
3 years ago
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