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3 years ago

What is the current scientific thinking about the formation of the solar system?

Chemistry

2 answers:

vitfil [10]3 years ago

8 0

Answer:

D. The solar system formed from the dust and gases in a nebula. A center bulge in the nebula became the sun. The area of flat rings in the nebula became the individual orbital paths in which the planets revolve around the sun in the plane of the ring the path came from. Dust and gas particles found in each area combined to form the planets and their moons.

Explanation:

Stars are born in molecular clouds known as nebula.

According to current most believed theory, solar system was born in solar nebula. It is composed of dust and gases. This cloud of dust and gases collapsed under its own weight and condensed to form the core. It started spiralling and gathering more mass till temperature rose to start the nuclear fusion reaction and the sun was born. The rest of the matter accreted to form planets and their moons. The planets orbit the sun in elliptical paths.

Thus, options D is correct.

Eva8 [605]3 years ago

6 0

The solar system formed dust and many gases in a nebula. The center of the nebula eventually became the sun. The flat rings of outside the nebula became the orbit paths, and that is where the planets stay and rotate around the sun. After that dust particles and gases that were found were all combined up to create planets and moons. so its D

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Selenium has six valence electrons. what is the valence of selenium

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4 years ago

Imagine that one tree outside your home looks unhealthy, although all the other trees seem healthy and strong. Describe how you

Westkost [7]

Answer:

Hypothesis---experiments----results----conclusion.

Explanation:

First we make a hypothesis means a statement about why the tree looks unhealthy. In this segment of scientific method we have to test the hypothesis through experimentation. After that we have to take the readings of various parts of the tree and analyze the data to find out the problem. In the next step, we have to made the results on the basis of the data that is obtained. In the last we have to write the conclusion of the analysis and see the hypothesis.

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3 years ago

What is the freezing point of a solution prepared from 45.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m.

Andrews [41]

Answer:

$T_{sol}=-15.9\°C$

Explanation:

Hello,

In this case, we can analyze the colligative property of solutions - freezing point depression - for the formed solution when ethylene glycol mixes with water. Thus, since water freezes at 0 °C, we can compute the freezing point of the solution as shown below:

$T_{sol}=T_{water}-i*m*Kf$

Whereas the van't Hoff factor for this solute is 1 as it is nonionizing and the molality is:

$m=\frac{mol_{solute}}{kg\ of\ water}=\frac{45.0g*\frac{1mol}{62g} }{85.0g*\frac{1kg}{1000g} } =8.54m$

Thus, we obtain:

$T_{sol}=0\°C+(-8.54m*1.86\frac{\°C}{m} )\\\\T_{sol}=-15.9\°C$

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3 years ago

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4 years ago

Read 2 more answers

What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total vol

riadik2000 [5.3K]

Solution :

Molecular mass of NaOH is 23 g/mol .

So, number of moles of NaOH is given by :

$n = \dfrac{10}{40}\ mole$