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Ostrovityanka [42]
2 years ago
13

What would you see if you were standing in the path of totality?.

Biology
2 answers:
Ulleksa [173]2 years ago
7 0

Answer:

a total solar eclipse

Explanation:

dedylja [7]2 years ago
3 0

Anyone within the path of totality can see one of nature's most awe-inspiring sights - a total solar eclipse. This path, where the moon will completely cover the sun and the sun's tenuous atmosphere - the corona - can be seen, will stretch from Lincoln Beach, Oregon to Charleston, South Carolina.

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12. Se obtienen 500 mL de CO2 en el laboratorio a una temperatura de 18 °C y una presión de 560 mmHg. El volumen que ocupa a con
vfiekz [6]

Answer:

A. 345,6 mL

Explanation:

Tenemos un gas definido en ciertas condiciones (de presión, temperatura y volumen) y queremos saber el volumen que ocupará en condiciones normales de presión y temperatura, es decir, 1 atm y 0ºC.

Para resolver este problema utilizaremos la ecuación de los gases ideales:

pV=nRT

Ya tenemos todos los datos, y sólo nos resta calcular n, el número de moles. R es la constante de los gases, la cual tiene el valor redondeado de 0.082 L.atm/mol.K, por lo cual es importante convertir las unidades para que éstas se cancelen y den como resultado los moles de gas.

Dividimos 560 en 760 para pasar de mmHg a atm, 500 mL se dividen por 1000mL para pasar a litros, y a la temperatura de 18ºC se le suman 273 para pasarla a Kelvin.

Despejamos n de la ecuación:

n=p.V ÷ R.T

n= 0.740 atm × 0.50 L ÷ 0.082 L.atm/mol.K × 291 K

n= 0.0155 mol

Ahora que tenemos el número de moles del gas, podemos usar la ecuación nuevamente para calcular el volumen que tendrá el gas en condiciones normales (1 atm y 0ºC, o 273 K).

Despejamos V de la ecuación:

V= n.R.T ÷ p

V= 0.0155 mol × 0.082 L.atm/mol.K × 273 K ÷ 1 atm

V= 0.346 L ≈ 346 mL

El volumen que ocupará el mismo gas a condiciones normales será 346 mL, por ende la respuesta correcta es la A. Hay una pequeña discrepancia pero ésta es normal, se debe al redondeo del resultado al final (acá redondeo 345.6 a 346).

4 0
3 years ago
nhóm nguy cơ sinh vật, phương pháp phòng tránh phát tán vi sinh vật và cách xử lí khi bị phơi nhiễm với vi sinh vật trong phòng
WINSTONCH [101]

Answer:

Washing hands daily and wear clean clothes.

Explanation:

Washing hands daily and wear clean clothes are the methods which prevent the spread of microorganisms and when exposed to microorganisms in the laboratory, we will have to use disinfectant in order to remove the microbes so that the solution or reactions are safe from the contamination. There are many methods such as sterilization as well as using chemicals is responsible for the removal of microorganisms.

4 0
3 years ago
Gregor Mendel examined simple patterns of inheritance in his work with pea plants. Unlike pea plants, many human traits have com
Ostrovityanka [42]
I don’t know the answer to this question
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3 years ago
What part of the cell is mostly water, why is that important?
Inessa [10]
I believe it is the blood cell...

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4 years ago
A human starts as ______ cell(s) and by the time they are an adult, they have ______ cell(s).
oksian1 [2.3K]
A human starts with” 1 “cell and by the time they are an adult, they have “ 50 trillion “ cells
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2 years ago
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