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Goshia [24]
4 years ago
8

Calculate the electron contribution to the molar heat capacity at constant volume of silver, CV, at 270 K . Express your result

as a multiple of R. Express your answer using two significant figures. CVR C V R = nothing Request Answer Part B Calculate the electron contribution to the molar heat capacity at constant volume of silver, CV, at 270 K . Express your result as a fraction of the actual value for silver, Cactual = 25.3 J/(K⋅mol) . Express your answer using two significant figures. CVCactual C V C a c t u a l = nothing Request Answer Provide Feedback
Chemistry
1 answer:
jeka57 [31]4 years ago
6 0
This is way out of my league
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¿recuerdas cuales son los principales sistemas que conforman nuestro cuerpo y sus funciones generales? ​
mixer [17]

Answer:

Los principales sistemas del cuerpo humano son: nervioso, endocrino, circulatorio, digestivo, excretor, respiratorio,  reproductor, muscular, esquelético, linfático, integumentario e inmunológico

Explanation:

En el cuerpo humano, las células se organizan en tejidos, los cuales a su vez forman órganos y finalmente dichos órganos forman sistemas de órganos que llevan a cabo funciones de forma conjunta.

Los principlales sistemas de órganos y sus funciones son los siguientes:

- nervioso: controla los impulsos nerviosos, controlando tanto los movimientos voluntarios del cuerpo como también las funciones cognitivas.

-endócrino: regula diferente funciones del organismo (como por ejemplo, el crecimiento) a partir de la secreción de sustancias químicas denominadas hormonas

-circulatorio: encargado de llevar nutrientes y eliminar desechos de los tejidos a través de la sangre  

-digestivo: encargado de la obtención de nutrientes a través del proceso de digestión de alimentos

-respiratorio: intercambia gases con el medio exterior, obteniendo oxígeno y eliminando dióxido de carbono

-excretor: elimina los desechos del organismo

-reproductor: encargado de perpetuar la especies mediante el mecanismo sexual de reproducción

-muscular: responsable de los movimientos voluntarios e involuntarios  

-esquelético: provee un sostén físico a las diferentes partes del cuerpo  

-inmunológico: encargado de eliminar microorganismos patógenos

-linfático: también implicado en la defensa del organismo contra microorganismos patógenos  

-integumentario: provee una capa que protege al organismo de agentes externos como, por ejemplo, los rayos solares

8 0
3 years ago
What organelle or organelles converts sunlight to chemical energy
sveticcg [70]
It’s the chloroplast
8 0
3 years ago
Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measure
Keith_Richards [23]

Answer:

C. triple point  

Explanation:

It is rare for a substance to have a triple point at 1 atm, so you can't measure it if you are limited to 1 atm.

It's easy to measure the melting point and boiling point, because they are the horizontal portions of the curve.

If you are adding heat at a constant rate, you can determine the heats of fusion and vaporization by measuring the times it takes for the substance to completely melt or vaporize.

4 0
4 years ago
Which of the samples described below contains the FEWEST atoms? No calculation is needed to answer this question.
Monica [59]

Hello!

To do this, use the molar mass. This is how much a mole of an atom weighs. A mole is 6.02214076×10²³ atoms.

Molar masses of:

Se: 78.96 g/mol

Cu: 63.546 g/mol

Ba: 137.327 g/mol

Now, the element with the highest molar mass will have the fewest atoms. This is because the element weighs more, so therefore for the same amount of mass, there will be less of the element needed to reach that mass.

Therefore, 10g of Ba would have the fewest number of atoms.

Hope this helps!

6 0
4 years ago
What is the half-life of a radioisotope if a 50-g sample becomes 25 g after 18
vredina [299]

Answer:

18 DAYS IS THE HALF LIFE OF THE RADIOISOTOPE.

Explanation:

Using the formula

Nt = No * (1/2)^t/t1/2

where;

Nt = amount remaining = 25 g

No = Initial amounrt of the radioisotope = 50 g

t = time elapsed = 18 days

t1/2 = half life = unknown

Substitute the values into the equation and obtain the half life of the radioisotope;

Nt = No * (1/2) ^t/t1/2

25 = 50 * (1/2) ^18/t1/2

25 /50 =  (1/2)^18/ t1/2

1/2 = (1/2)^18/t1/2

1/2)^1 = (1/2)^18/t1/2

1 = 18/t1/2

t1/2 = 18 days.

So therefore the half life of the radioisotope is 18 days.

4 0
3 years ago
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