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nataly862011 [7]
3 years ago
8

Lava at Earth’s surface or ______ below Earth’s surface cools and hardens to form mineral crystals.

Chemistry
1 answer:
nevsk [136]3 years ago
5 0

The most appropriate answer would be magma. Lava is a magma that reaches the Earth's surface, which is technically it is also a magma, and magma is located below the Earth's surface. Lava at Earth's surface or magma below Earth's surface cools and harden to form mineral crystals.

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If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g・°C) that can be heated from 22.5°C to
inysia [295]

Answer:

The correct answer will be "18.25 g".

Explanation:

The given values are:

Specific heat,

C = 0.45 J/g・°C

Heat involved,

q =  801 J

Temperature,

ΔT = 120.0°C-22.5°C

     = 97.5°C

As we know,

⇒  C = \frac{q}{m \Delta T}

On substituting the given values, we get

⇒  0.45=\frac{801}{m(97.5)}

⇒  m = 18.25 \ g

3 0
4 years ago
What are the masses of the four different BrClBrCl molecules? Express the masses in atomic mass units using six significant figu
Sliva [168]

Answer ; The question is missing in some details, but here are he details ;

The two naturally occurring isotopes of bromine are

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The two naturally occurring isotopes of chlorine are

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Bromine and chlorine combine to form bromine monochloride, BrCl.

Explanation:

The detaile calculation is as shown in the attachment.

6 0
3 years ago
Explain how heat in earths interrior is transferred
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7 0
4 years ago
How many significant figures are in 0.00375
Galina-37 [17]

Answer:

There are 3 significant figures

3 0
3 years ago
If you pump air into cycle tyre a slight warming effect is noticed at valve stem why
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3 years ago
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