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Gennadij [26K]
3 years ago
12

Why do you del cold when you get out of the pool?

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
6 0
The water on your skin is evaporating, pulling heat with it. This is  called evaporative cooling.
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Cuando se quema 1 mol de metano –o sea, 16 g–, se desprenden 802
Anvisha [2.4K]

Answer:

1 gramo de metano aporta 50.125 kilojoules.

1 gramo de metano aporta 48.246 kilojoules.

Explanation:

La cantidad de energía liberada por la combustión de una unidad de masa del hidrocarburo (Q), en kilojoules por mol, es igual a la cantidad de energía liberada por mol de compuesto (\bar {Q}), en kilojoules por mol, dividido por su masa molar (M), en gramos por mol:

Q = \frac{\bar Q}{M} (1)

A continuación, analizamos cada caso:

Metano

Q = \frac{802\,\frac{kJ}{mol} }{16\,\frac{g}{mol} }

Q = 50.125\,\frac{kJ}{g}

1 gramo de metano aporta 50.125 kilojoules.

Octano

Q = \frac{5500\,\frac{kJ}{mol} }{114\,\frac{g}{mol} }

Q = 48.246\,\frac{kJ}{mol}

1 gramo de metano aporta 48.246 kilojoules.

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2 years ago
Que impacto ambiental hay de los servicios de integrales de diseño y contracción​
Nuetrik [128]

Answer:

IMPACTO AMBIENTAL EN LOS DISEÑOS Y CONSTRUCCIÓN

Explanation:

Los impactos directos por el uso de las vías terrestres pueden incluir: mayor demanda de combustibles para los motores; accidentes con los medios no motorizados de transporte o el reemplazo de los mismos; mayor contaminación del aire, ruido, desechos a los lados del camino; daños físicos o muerte a animales y personas ...

8 0
3 years ago
What are the three main technical support options for Microsoft users? Find It Myself, Ask the Community, Get Live Help Communit
Katen [24]

Answer:

Find It Myself, Ask the Community, Get Live Help

Explanation:

The three main options for Microsoft users are Find It Myself, Ask the Community, Get Live Help. The first of which is finding it yourself through the search menu or help guidelines provided by Microsoft in all of their operating systems. Secondly, would be asking the community through search engines such as Google or through Microsoft help forums. Lastly, would be getting live help since Microsoft opertaing systems have a remote desktop feature that allows you to connect to another IT professional from a distance, or you can simply contact an IT professional to visit you in person for technical assistance.

8 0
3 years ago
What are 4 characteristics of metals
andriy [413]

Answer:

Metals have high densities, high melting points, are malleable and ductile, and can conduct heat and electricity.

Hope this helps as well! :)

7 0
3 years ago
Read 2 more answers
Which best represents a reaction mechanism?
PIT_PIT [208]
A + B = Products
This is the correct mechanism.
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3 years ago
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