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3 years ago

What do you think our solar system consists of?

2 answers:

7 0

Answer: Our solar system consists of the stars, the Sun, the planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune), dwarf planets such as Pluto, many moons, and a bunch of asteroids, comets and meteoroids!

Explanation:

Kaylis [27]3 years ago

4 0

Answer:

planets,stars and lots more

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John finds a rock that contains large, light-colored mineral crystals. the rock shows no sign of being altered by heat or pressu

cupoosta [38]

From the above statement, John can infer that the rock underwent metamorphism and also is not altered by heat or pressure.

<u>Explanation</u>:

Metamorphic rock is an igneous sedimentary rock and although when put through heat the rock becomes hot but does not alter its shape or melt. If the rock melts then it is only an igneous rock and not a sedimentary one.
During metamorphism, the chemical and the mineral content of prolith are changed due to changes in the environment based on physical and chemical conditions.
Even though the rocks remain solid, fluid is present between the macroscopic spaces.
This gives "The Geologist" accurate information of what happens beneath the earth during the formation of mountains.
Metamorphic rocks are like probes that go down the earth and comes back giving information of what happens underneath the surface.

4 0

3 years ago

both sides in the war used military observers in hydrogen-filled balloons to watch the enemy's movements

lesya692 [45]

Answer:

Yes.

Explanation:

Hydrogen-filled balloons were widely used by the militaries during World War I (1914–1918). The main purpose of these hydrogen-filled balloons to detect movements of enemy troops and to provide direction to the artillery fire. Balloons were the targets of opposing aircraft because they knew the purpose of these balloons so they hit it whenever seen by the enemies so we can say that both sides used hydrogen-filled balloons as military observer to watch the enemy's movements.

7 0

3 years ago

1200 <br> scientific notation

Whitepunk [10]

Answer:

1.2 x $10^{3}$

3 0

3 years ago

Read 2 more answers

Calculate the concentration (M) of sodium ions in a solution made by diluting 10.0 mL of a 0.774 M solution of sodium sulfide to

Luda [366]

The concentration of sodium ions in a solution made by diluting 10.0 mL of a 0.774 M solution of sodium sulfide to a volume of 100 mL would be 0.1548 M.

<h3>Dilution</h3>

According to the dilution principle, the number of moles of solutes in a solution before and after dilution must be the same. This is expressed as the following equation:

$m_1v_1 = m_2v_2$

Where $m_1$ is the molarity before dilution, $v_1$ is the volume before dilution, $m_2$ is the molarity after dilution, and $v_2$ is the volume after dilution.

In this case, $m_1$ = 0.774 M, $v_1$ = 10.0 mL, $v_2$ = 100 mL.

$m_2$ = $m_1v_1/v_2$

= 0.774 x 10/100

= 0.0774 M

Thus, the new concentration of the sodium sulfide solution would be 0.0774 M.

Mole of the final solution: 0.0774 x 0.1 = 0.00774 mol

Sodium sulfide formula = $Na_2S$ ---> $2Na^+ + S^{2-$

Equivalent mole of sodium ion = 0.00774 x 2

= 0.01548 mol

The concentration of sodium ions = mol/volume

= 0.01548/0.1

= 0.1548 M

In other words, the concentration of the sodium ions in the diluted solution would be 0.1548 M.

More on dilution can be found here: brainly.com/question/21323871

#SPJ1

6 0

1 year ago

Does mint actually cool things down

PtichkaEL [24]

The cooling of a mint is just a sensation if you were to put mints into warm water the water would remain warm because it is just a cooling sensation. I hope this helps:)

3 0

4 years ago