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olasank [31]
2 years ago
7

What is igneous rock?

Chemistry
2 answers:
EleoNora [17]2 years ago
8 0

Answer:  A) Rock formed by...magma or lava

Explanation:

As the question says, igneous rocks are formed from the cooling and solidification of magma or lava.

<em>just a bit of visual aid thanks to Thoughtco.</em>

Vikentia [17]2 years ago
7 0

Answer:

It is the first one - Rock formed by the cooling and solidification of hot liquid magma or lava.

Explanation:

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17 dozens 12/204=17
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2 Fe + O2 + 3 Fe2O3<br> What type of reaction is this.
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Convert .300 moles of s to grams of s
STALIN [3.7K]
Atomic mass S = 32.0 a.m.u

1 mole S ------------- 32.0 g
0.300 moles S ------ ??

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HELP <br> The question is in the picture, I will give 5 stars!
Fynjy0 [20]

The answer is 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

<h3>What is Boiling Point Elevation ?</h3>

Boiling point elevation is the phenomenon that occurs when the boiling point of a liquid (a solvent) is increased when another compound is added, such that the solution has a higher boiling point than the pure solvent.

Boiling point elevation occurs whenever a non-volatile solute is added to a pure solvent.

ΔT = i * Kb * m

where m, Kb and i are the molality of solution, ebullioscopic constant and Van't Hoff factor respectively

The data given in the question is ΔT = 5 °C

mass of solvent = 1 kg

Kb = 0.51 °C/(mol/kg)

Van't Hoff Factor for NaCl is 2

Substituting the values in the above equation

\rm 5 = \rm\dfrac{2\times0.51\times moles \;of \;salt}{1}

\rm moles \;of \;salt = \rm\dfrac{5}{2\times0.51}

moles of salt = 4.9

Therefore 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

To know more about Boiling point elevation

brainly.com/question/17218953

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2 years ago
Sound waves are longitudinal, mechanical, compression waves.<br> A. True<br> B. False
andrezito [222]

Answer:

True

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3 years ago
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