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MrRissso [65]
3 years ago
7

Minerals in geodes form spectacular euhedral crystals because ________. A. all of the elements incorporated in the crystals are

in plentiful supply B. the crystals have abundant room to grow in their hollow surroundings C. minerals within geodes are always framework silicates D. minerals within geodes always contain iron
Chemistry
1 answer:
11111nata11111 [884]3 years ago
4 0

Answer:

C. minerals within geodes are always framework silicates

Explanation:

This is true going by the facts that, it is only the silicates that can be able to form crystals as obtainable in diamonds etc. Since the minerals in geodes are in the framework of silicates families, they can be able to form euhedral crystals.

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The heat capacity of air is much smaller than that of water, and relatively modest amounts of heat are needed to change its temp
LekaFEV [45]

Answer:

Q=9.2x10^5J

t=614s=10.2min

Explanation:

Hello,

In this case, we can compute the energy by using the following formula for air:

Q=nCp\Delta T

Whereas the moles of air are computed via the ideal gas equation at room temperature inside the 5.5m x 6.5m x 3.0m-room:

n=\frac{PV}{RT}\\\\V=5.5m*6.5m*3.0m=107.25m^3*\frac{1000L}{1m^3}=107250L\\ \\n=\frac{1atm*107250L}{0.082\frac{atm*L}{mol*K}*298.15K}\\ \\n=4386.8mol

Now, we are able to compute heat, by considering that the temperature raise is given in degree Celsius or Kelvins as well:

Q=4386.8mol*21\frac{K}{mol*K}*10K \\\\Q=9.2x10^5J

Finally, we compute the time required for the heating by considering the heating rate and the required heat, shown below:

t=\frac{9.2x10^5J}{1.5\frac{kJ}{s}*\frac{1000J}{1kJ} } \\\\t=614s=10.2min

Regards.

8 0
3 years ago
An elephant has a mass of 156,000 kg and a volume of 6 KL. Find the elephant's density.
bixtya [17]

Answer:

26,000 KL/kg will be the density of the Elephant.

4 0
3 years ago
The pressure exerted by a gas on its container is inversely related to its Kelvin temperature
Lelu [443]
False, as pressure increases, temperature increases, given that other factors stay the same.
7 0
3 years ago
A feather falls through the air more slowly than a brick because of ____.
NeTakaya

Answer:

Gravity

Explanation:

Gravity is what moves things

4 0
4 years ago
Read 2 more answers
The anion O3− does not obey the octet rule. Draw its Lewis structure and state the type of octet-rule exception. Indicate the va
Tju [1.3M]

One of the oxygen atoms in the anion O3− is hypervalent and the formal charge on this oxygen atom is -1.

Ozone is a triatomic molecule. The anion formed from ozone is called the ozonide anion. This anion is also triatomic. The resonance structures of the ozonide anion are shown in the image attached to this answer.

We can see that one of the oxygen atoms in the ozonide ion is hypervalent because it contains ten instead of eight electrons. This hypervalent oxygen atom has a formal charge of -1 while the two other oxygen atoms has a formal charge of zero.

Learn more: brainly.com/question/8646601

3 0
3 years ago
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