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2 years ago

When does a lunar eclipse occur?

Chemistry

2 answers:

Bezzdna [24]2 years ago

7 0

Answer:

A lunar eclipse occur when the Moon moves into the earths shadow.

cluponka [151]2 years ago

5 0

Answer:

A partial lunar eclipse occurs when the Earth moves between the Sun and Moon but the three celestial bodies do not form a straight line in space. When that happens, a small part of the Moon's surface is covered by the darkest, central part of the Earth's shadow, called the umbra.

Explanation:

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Un recipiente cerrado, de 4,25 L, con tapa móvil, contiene H2S(g) a 740 Torr y 50,0°C. Se introduce en ese recipiente N2(g) a te

yulyashka [42]

Answer:

$n_{N_2}=6.41mol$

Explanation:

¡Hola!

En este caso, teniendo en cuenta la información dada por el problema, inferimos que primero se debe usar la ecuación del gas ideal con el fin de calcular las moles de gas que se encuentran al inicio del experimento:

$PV=nRT\\\\n=\frac{RT}{PV} \\\\n=\frac{0.08206\frac{atm*L}{mol*K}*(50.0+273.15)K}{740/760atm*4.25L}\\\\n=6.41mol$

Seguidamente, usamos la ley de Avogadro para calcular las moles finales, teniendo el cuenta que el volumen final es el doble del inicial (8.50 L):

$n_2=\frac{6.41mol*8.50L}{4.25L}\\\\n_2=12.82mol$

Quiere decir que las moles de N2(g) que se agregaron son:

$n_{N_2}=12.81mol-6.41mol\\\\n_{N_2}=6.41mol$

¡Saludos!

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2 years ago

Is Himalayan mountain still forming today? Explain plzzzz:/

never [62]

The continued growth in the Himalayas is likely due to the Indian tectonic plate stillmoving slowly but surely northward. We know the plate is still moving in part because of the frequent earthquakes in the region

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3 years ago

Read 2 more answers

Which of the following measurements is expressed to three significant figures?

tiny-mole [99]

D. is the answer
hope i could help

8 0

3 years ago

Define by-products of petroleum?

lara31 [8.8K]

Petroleum products are materials derived from crude oil as it is processed.

Hope this helps!

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3 years ago

If the mass of a certain block is 500g, what is the weight of the block?

Dafna11 [192]

______________________________

Solution,

Mass=500g =500/1000=0.5 kg

gravity(g)=9.8m/s^2

Now,

Weight= m*g

 = 0.5*9.8

 =4.9 N

So the weight of the block is 4.9 Newton

hope it helps...

Good luck on your assignment

5 0

3 years ago

When does a lunar eclipse occur?​

When does a lunar eclipse occur?