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3 years ago

When does a solar Eclipse happen, and how?

2 answers:

4 0

A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight. This occurs when the Sun, Moon and Earth are aligned.

Nezavi [6.7K]3 years ago

3 0

Answer:

Solar Eclipse happens when the moon gets between the sun and the earth, the moon gets all the light and blocks the earth from getting sunlight.

Hope this helps ;) ❤❤❤

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Carlos is making phosphorus trichloride using the equation below. He uses 15.5 g of phosphorus and collects 50.9 g of phosphorus

Oxana [17]

Answer : The mass of chlorine reacted with the phosphorus is, 53.25 grams.

Explanation :

First we have to calculate the moles of phosphorus.

$\text{Moles of phosphorus}=\frac{\text{Mass of phosphorus}}{\text{Molar mass of phosphorus}}$

$\text{Moles of phosphorus}=\frac{15.5g}{31g/mol}=0.5mol$

Now we have to calculate the moles of $Cl_2$

The balanced chemical reaction is:

$2P+3Cl_2\rightarrow 2PCl_3$

From the balanced chemical reaction, we conclude that

As, 2 moles of phosphorous react with 3 moles of $Cl_2$

So, 0.5 moles of phosphorous react with $\frac{3}{2}\times 0.5=0.75$ moles of $Cl_2$

Now we have to calculate the mass of $Cl_2$

$\text{Mass of }Cl_2=\text{Moles of }Cl_2\times \text{Molar mass of }Cl_2$

Molar mass of $Cl_2$ = 71 g/mol

$\text{Mass of }Cl_2=0.75mol\times 71g/mol=53.25g$

Therefore, the mass of chlorine reacted with the phosphorus is, 53.25 grams.

4 0

4 years ago

Read 2 more answers

Please help again. Sorry!>♡

Svet_ta [14]

Matter is found every where in the universe and there is never any substance in the universe that is not composed of matter.

<h3>What is matter?</h3>

Matter is anything that has weight and occupy space. We know that matter is present in every part of the universe. Everything in the universe is composed of matter. Matter forms the basics of our study of the universe. Water, food cloths everything all are composed of matter.

The fact that matter inundates the universe has made the study of matter an unavoidable topic. As such, we can not really be able to point something that is of made up of matter. There can be no such thing!

As long as a thing does exist in the material universe, that thing is made up of matter. Look at yourself for example, matter is spread all across your body. The same occurs in the bodies of every other living thing.

The nonliving things are not also left out as they are equally composed of diverse kinds of matter that exists in the universe.

Learn more about matter:brainly.com/question/28487167

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8 0

2 years ago

Which scientist is credited with developing the orbital model of the atom? A. J.J. Thomson. . B. Ernest Rutherford. . c. Niels B

Yuliya22 [10]

C.) Neils Bohr is credited with that....

4 0

3 years ago

Read 2 more answers

PLEASE HELP I DONT HAVE MUCH TIME I WILL MARK AS BRAINLIST!!!!

Damm [24]

Answer:

i dont know but it is probily 4 and 6

5 0

2 years ago

The energy of the ground state in the bohr model is -13. 6 ev. the energy of the n = 2 is:_______

vlabodo [156]

Bohr's model explained the position of the electron, proton, and neutron in the atom of the element. The energy at the n = 2 level of the atom will be - 3.40 eV.

<h3>What is the principal quantum number (n)?</h3>

The principal quantum number (n) has been the distance of the electron of that atom in the nucleus and its energy in the structure. It can also be said to define the size of the atomic orbit.

n = 2 is the first excited state whose energy is calculated as:

Eₙ = − 13.6 ÷ n² eV

E₂ = - 13.6 eV ÷ 2²

= -3.40 eV

Therefore, -3.40 eV is the energy of electron at n = 2.

Learn more about principal quantum numbers here:

brainly.com/question/14307071

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7 0

2 years ago