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2 years ago

7

A sample of tap water consists of water, fluoride ions, calcium ions, and several other dissolved ions. The ions are evenly dist

ributed throughout the water. Which term or terms could be used to describe this sample of tap water

1 answer:

Gekata [30.6K]2 years ago

6 0

Disgusting, depressing, and misery. Tap water is beyond formidable.

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Explain ways that organisms interact in helpful and harmful ways.

I am Lyosha [343]

Organisms are living things. Us humans are also living things, so we are helpful and harmful to other organisms. For example: we can help another human being with something, or we can help a plant/tree grow if we water it. In return, they also help us by providing us with oxygen. however, we can also be harmful to each other and the environment, for example: we can't hurt each other, or plant or animals by killing them or we can hurt insects by stepping on them. Therefore, organisms are helpful and harmful to each other.

4 0

3 years ago

Which statement describes one characteristic of an operating electrolytic cell?

kati45 [8]

Answer:

B

Explanation:

The mechanism of this process: the electrolytic cell converts the electrical energy to chemical energy, using external energy source.

8 0

3 years ago

¿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

How can the rescue workers get enrgy to the batteries in their equipment during rescue missions.

Ipatiy [6.2K]

Answer:

a generator that allows them to convert kinetic energy into potential energy

Explanation:

Rescue workers can accomplish this by using a generator that allows them to convert kinetic energy into potential energy. Such as a crank generator, with these, they spin a crank with their hands and the generator takes that kinetic energy that is building up through the work that the rescuer is exerting and converts it to potential electric energy that can properly be used to provide energy to the batteries for their equipment. This is what is generally used for situations such as what rescuers go through when there is no electricity around.

3 0

3 years ago

Two moles of a monatomic ideal gas are contained at a pressure of 1 atm and a temperature of 300 K; 34,166 J of heat are transfe

anygoal [31]

Answer:

Final temperature is 302 K

Explanation:

You can now initial volume with ideal gas law, thus:

V = $\frac{n.R.T}{P}$

Where:

n are moles: 2 moles

R is gas constant: 0,082 $\frac{atm.L}{mol.K}$

T is temperature: 300 K

P is pressure: 1 atm

V is volume, with these values: <em>49,2 L</em>

The work in the expansion of the gas, W, is: 1216 J - 34166 J = <em>-32950 J</em>

This work is:

W = P (Vf- Vi)

Where P is constant pressure, 1 atm

And Vf and Vi are final and initial volume in the expansion

-32950 J = -1 atm (Vf-49,2L) × $\frac{101325 J}{1 atm.L}$

Solving: <em>Vf = 49,52 L</em>

Thus, final temperature could be obtained from ideal gas law, again:

T = $\frac{P.V}{n.R}$

Where:

n are moles: 2 moles

R is gas constant: 0,082 $\frac{atm.L}{mol.K}$

P is pressure: 1 atm

V is volume: 49,52 L

T is final temperature: <em>302 K</em>

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I hope it helps!

4 0

3 years ago