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Anuta_ua [19.1K]
3 years ago
11

Why is it not easy to replace a link in a food chain?

Chemistry
1 answer:
solniwko [45]3 years ago
7 0

Answer:

D-the last option

Explanation:

I think I'm correct.

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A mixture of gasoline and air explodes when it encounters a spark. This is
Aleksandr [31]

Answer:

<em>D. A combustion reaction</em>

Explanation:

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3 years ago
What word is used to refer to a group of organ systems working together?
kotegsom [21]

Answer:

1

Explanation:

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3 years ago
How does upwelling affect coastal fisheries?<br> look atthe pic
djverab [1.8K]
I believe the answer is D because warm water generally has more nutrients than cold water. 

It does not improve the nutrients so it isn't B or C.

Hope this helps!
7 0
3 years ago
Read 2 more answers
Un mol de amoniaco Tiene una masa molar de 17 g y ocupa un volumen de 22.4 l qué volumen ocupa el 50 g amoniaco en condiciones n
mr_godi [17]

Answer:

V  = 65.81 L

Explanation:

En este caso, debemos usar la expresión para los gases ideales, la cual es la siguiente:

PV = nRT  (1)

Donde:

P: Presion (atm)

V: Volumen (L)

n: moles

R: constante de gases (0.082 L atm / mol K)

T: Temperatura (K)

De ahí, despejando el volumen tenemos:

V = nRT / P   (2)

Sin embargo como estamos hablando de condiciones normales de temperatura y presión, significa que estamos trabajando a 0° C (o 273 K) y 1 atm de presión. Lo que debemos hacer primero, es calcular los moles que hay en 50 g de amoníaco, usando su masa molar de 17 g/mol:

n = 50 / 17 = 2.94 moles

Con estos moles, reemplazamos en la expresión (2) y calculamos el volumen:

V = 2.94 * 0.082 * 273 / 1

<h2>V = 65.81 L</h2>
4 0
3 years ago
Which of the following is an example of a chemical reaction?
FrozenT [24]
All of the above are chemical reactions.
If that is a choice 
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3 years ago
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