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2 years ago

What are stars and galaxy made of?

2 answers:

4 0

What are stars made of? Basically, stars are big exploding balls of gas, mostly hydrogen and helium. Our nearest star, the Sun, is so hot that the huge amount of hydrogen is undergoing a constant star-wide nuclear reaction, like in a hydrogen bomb.

In a spiral galaxy like the Milky Way, the stars, gas, and dust are organized into a "bulge," a "disk" containing "spiral arms," and a "halo." Elliptical galaxies have a "bulge-shape" and a "halo," but do not have a "disk.

Hope it helped

kakasveta [241]2 years ago

3 0

A. Younger stars and gaseous nebulae

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what are some snacks i can make that go with egg nog (please provide recipe) (will give brainilest for a good answer)

Anit [1.1K]

Answer:

Cream butter and sugar. Beat in eggnog, baking soda and nutmeg. Gradually add flour and mix well. Cover and chill 1 hour. On a lightly floured surface, roll out half of the dough to 1/8-in. thickness. Using floured 3-1/2-in. cookie cutters, cut into desired shapes; place on ungreased baking sheets. Repeat with remaining dough.

Explanation:

eggnog crumble cookies they are so good

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2 years ago

A gas mixture has a total pressure of 0.51 atm and consists of He and Ne. If the partial pressure of He in the mixture is 0.32 a

sp2606 [1]

Explanation:

Relation between total pressure and mole fraction is as follows.

$P_{1} = P^{o}x_{1}$

where, $P_{1}$ = partial pressure of gas 1

$x_{1}$ = mole fraction of gas 1

$P^{o}$ = total pressure of the gases

Also, it is known that $x_{1} + x_{2}$ = 1

or, $x_{2} = 1 - x_{1}$

It is given that total pressure of gas mixture is 0.51 atm and partial pressure of helium is 0.32 atm.

Hence, calculate the mole fraction of helium gas present in the given mixture as follows.

$P_{He} = P^{o}x_{He}$

0.32 atm = $0.51 atm \times x_{He}$

$x_{He}$ = 0.63

As, $x_{He} + x_{Ne}$ = 1

so, $x_{Ne} = 1 - x_{He}$

= 1 - 0.63

= 0.37

Hence, calculate the partial pressure of Ne as follows.

$P_{total} = P_{He}x_{He} + P_{Ne}x_{Ne}$

$0.51 atm = 0.32 atm \times 0.63 + P_{Ne}\times 0.37$

$0.51 atm = 0.2016 atm + 0.37 \times P_{Ne}$

0.3084 atm = $0.37 \times P_{Ne}$

$P_{Ne} = \frac{0.3084 atm}{0.37}$

= 0.834 atm

Thus, we can conclude that the partial pressure of the Ne in the mixture is 0.834 atm.

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2 years ago

When Ca+2 and O-2 form a compound what is the overall charge of the compound formed

defon

magnesium cations (Mg 2+) and oxide anions (O 2−)

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3 years ago

A certain reaction is endothermic in the forward direction. The reaction has less moles of gas on the product side. Which of the

xxMikexx [17]

It would have to increase pressure... but I don’t see that option here..?

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2 years ago

An element has 8 protons and 8 neutrons in its nucleus and 8 electrons revolving around the nucleus. What is the atomic number a

ExtremeBDS [4]

The mass of an atom comes from the protons and neutrons that are found in the nucleus. The number of protons is the atomic number of an element. To find the number of neutrons, subtract the atomic number from the mass of an atom. The atomic number is 8 and the atomic mass is 16.

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2 years ago