How do crystal systems differ from eachother
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The different crystal systems differ from each other in the angles between the axes and the lengths of the axes.
There are seven crystal systems:
- Cubic: The cubic crystal system has three axes that are perpendicular to each other and of equal length.
- Tetragonal: The tetragonal crystal system has three axes that are perpendicular to each other, but one axis is longer than the other two.
- Orthorhombic: The orthorhombic crystal system has three axes that are perpendicular to each other, but none of the axes are of equal length.
- Monoclinic: The monoclinic crystal system has three axes, two of which are perpendicular to each other and the third is at an angle to the other two.
- Triclinic: The triclinic crystal system has three axes that are not perpendicular to each other.
- Trigonal: The trigonal crystal system has three axes that are equal in length and intersect at 120-degree angles.
- Hexagonal: The hexagonal crystal system has three axes that are equal in length and intersect at 120-degree angles, and a fourth axis that is perpendicular to the other three axes.
The cubic crystal system has the highest symmetry, while the triclinic crystal system has the lowest symmetry. The symmetry of a crystal system determines the properties of the crystal, such as its hardness, density, and electrical conductivity.
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Crystal are classified according to the possible relations of the crystal axes.This classification is called as crystal system.
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How large is the observable universe
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I hope I help
(2) crystal structures
(3) isotopic abundances
(4) percent compositions
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Answer;
- Crystal structure
Explanation;
-Diamond and graphite are allotropes of carbon, they differ in physical properties.
-In graphite, carbon atoms are covalently bonded to form sheets or what we call hexagonal layers, and these sheets are held together by weak inter-molecular forces called vander waal forces. This makes the layers to slide over each other , a property that makes graphite soft and slippery.
-In Diamond, carbon atoms are bonded by strong covalent bonding forming a tetrahedron shaped solid of Diamond which makes it a very hard solid.
(2) crystal structures
(3) isotopic abundances
(4) percent compositions
Answers
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Have A Good Day!!!
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Answer:
A chemical reaction is the process by which a change takes place
Explanation:
A chemical reaction is a process by which one or more substances, called reactants, are transformed into one or more other substances with different properties, called products.
The bonds between the atoms that make up the reactants are broken. Then, the atoms rearrange themselves in another way, forming new bonds and giving rise to one or more different substances from the initial ones. So the atoms do not change, they remain the same, but it changes is the way they are linked together.
In short, chemical reactions are the process of arranging atoms and bonds when chemicals come into contact. The chemical properties change by altering the arrangement of the atoms in that substance.
So, a chemical reaction is the process by which a change takes place.
B) renewable.
C) made from minerals.
D)Burned in hydroelectric plants.
2. Which of the fallowing is a consequence of using fossil fuels as an energy source?
A) decreased carbon dioxide levels
B)increased biodiversity
C) increased acid rain
D) decreased ecosystem disruption
3. Which of the fallowing is a renewable form of energy
A) gasoline
B) natural gas
C) wind
D) coal
4. Which of the fallowing activities would contribute the most to global warming?
A)driving a solar-powered car
B)snowmobiling around a national park
C)launching an engine less glider
D)trekking by horseback
5. Which of the fallowing sets of actions will conserve the most energy?
A)caulk windows, use cloth shopping bags, wash clothes in cold water
B)bicycle or walk, turn up thermostat in winter, run water while brushing teeth
C)buy compact fluorescent bulbs, use plastic shopping bags, buy heavily packaged foods
D)insulate walls, buy bottled water, dry laundry in a clothes dryer
20 points and brainliest answer for who answers this correctly
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2) C
3) C
4) B
5) A
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Answer : The new volume of the air is, 6.83 L
Explanation :
Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
Therefore, the new volume of the air is, 6.83 L