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Irina18 [472]
2 years ago
14

A solid form of matter in which there is long range repeating order is called ________

Chemistry
1 answer:
polet [3.4K]2 years ago
3 0

Answer: A solid form of matter in which there is long-range repeating order is called crystalline.

Explanation:

A solid is crystalline if it has long-range order. Once the positions of an atom and its neighbors are known at one point, the place of each atom is known precisely throughout the crystal.

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Current research and technology of geothermal energy
gayaneshka [121]
Geothermal energy is the thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials
8 0
3 years ago
What is the momentum of a photon that has a wavelength of 3.00 102 nm? remember the wavelength of a photon is equal to planck's
marta [7]
De Broglie's equation is used to show that photons have both particle and wave nature. photons are quantized packets of energy. the wave nature of photons can be proven as they have a wavelength. the particle nature is given by them having both velocity and mass. 
de Broglies equation is;
λ = h / p 
where λ - wavelength 
h - Planck's constant 
p - momentum 
substituting the values in the equation 
p = h/λ
p = \frac{6.626 * 10^{-34}m^{2} kg/s }{3.00 *  10^{-7}  m}
p  = 2.20 x 10⁻²⁷ kgm/s
momentum of photon is 2.20 x 10⁻²⁷ kgm/s
5 0
3 years ago
HELP ASAP PLEASE!!!
charle [14.2K]
Answer 1:
Correct Answer: Option A i.e. <span>The temperature stays constant for a while, then rises (A).

Reason:
At 0 oC, H2O exist in dual state (solid and liquid) i.e. there exist an equilibrium between ice and water. Hence, when the heat is supplied, it is initially used to bring about phase transformation from solid to liquid state. During this time, temperature remains constant. Once the phase transformation has occurred, heat is  utilized for increasing the temperature of system i.e. water.
.......................................................................................................................

Answer 2:
Correct Answer: Option </span><span>B) At first, the energy supplied goes into overcoming attractive forces in the solid. </span><span>
Reason: 
In the present case, initially</span> the energy supplied goes into overcoming attractive forces in the solid. Once the ice is converted into water, it now exist in single phase i.e .liquid. Hence, now when further heat is supplied to the system, it is used only for increasing the temperature of system.
7 0
3 years ago
Both obsidian and pumice are formed from which of the following ?
Mashutka [201]

Answer:

option D= volcanoes

Explanation:

Obsidian:

It is igneous rock. It is made when molten rock material cool very rapidly in such a way that atoms could not arrange themselves and acquire amorphous form. It is also called mineraloid.

1. Mostly it is found in black color but it could be present in green or brown color.

2. In the form of glass obsidian are unstable and start to crystallize.

3. Obsidian are commonly found in New Zealand, Hungry, Russia, Canada, Italy, Argentine, Japan, Chile, Kenya, Peru and United States.

4. older obsidian can not be found because these glassy rocks destroyed very rapidly.

5. Obsidian are used in surgical tools for cutting.

6. obsidian are also used in jewelry.

Pumice:

pumice is volcanic rock. it is formed from the lava having high amount of gases and water content. the gas escape and frothy lava cool very rapidly and form very lighter rock material, called pumice.

1. it is lighter in color because of high content of silica.

2. its crushing material produce fine powder, called volcanic ash.

3. its density is very low that's way it floats on the surface of water.

4. it is used in the manufacturing of cement and also in pencil erasers.

5. it is found in Greece, Italy, Chile, Turkey, Russia , Tran, Syria ans United States.

6 0
3 years ago
The molecular weight of H2SO4 is:<br>49.078 g/mole<br>98.086 g/mole<br>194 296 armoe​
a_sh-v [17]

Answer:

The answer to your question is:   98 gr / mole

Explanation:

Molecular weight and molecular mass are synonyms and they referred to sum of the the molecular masses of the elements that form part of a compound. Their units are grams/ mole

In your example we need to sum the molecular mass of the components of sulphuric acid.

Like this:

Hydrogen(H) = 1.008 x 2

Sulphur (S)     = 32 x 1 = 32

Oxygen =          16 x 4 = 64

Total     =                       98 gr / mole

3 0
3 years ago
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