4 years ago

Stars are formed from interstellar clouds because of

1 answer:

4 0

The answer is D. Stars are formed from interstellar clouds because of the Law of Universal Gravitation. The interstellar clouds are termed as nebula. When other stars dies a supernova occurs then the gravity from this pushes matter into the clouds until it cannot overcome the gravitational pull and it collapses which heats matter up forming a star.

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30 Points! What is the difference between an atom and an ion

ValentinkaMS [17]

Atom is a neutral element found in nature without any charge. In other words, it has same number of Protons and electrons, whereas ion is a charged thing, either positive or negative. We can find their charge by:

Charge = Number of Protons - Number of Electrons

Hope this helps!

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3 years ago

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kobusy [5.1K]

Answer:

Hello!

Explanation:

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2 years ago

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How many grams of NaCl (molecular weight = 58.4 g mole-1) would you dissolve in water to make a total volume of 500 mL of soluti

kolezko [41]

Given :

Volume , V = 500 mL .

Molarity , M = 0.5 M .

Molecular mass of NaCl is $58.4\ g/mole$ .

To Find :

How many grams of NaCl is required .

Solution :

Let , NaCl required is x gram .

Molarity is given by :

$M=\dfrac{\text{Number of moles}}{\text{Volume (in liters) }}\\\\M=\dfrac{m}{M\times V}\\\\0.5=\dfrac{x}{58.4\times 0.5}\\\\x=0.5^2\times 58.4\ g\\\\x=14.6\ g$

Hence , this is the required solution.

6 0

3 years ago

What is 5.73 moles in grams

Pani-rosa [81]

I calculated is and the answer is 1272.0600000000002.

I really don't know how to explain it

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3 years ago

Ignore this!<br><br>i got the answer already haha

marta [7]

Answer:

okay lol, ima use this for points if okay

Explanation:

5 0

3 years ago