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Chemistry, 23.06.2019 09:30
The allotropes of carbon include a variety of structures that include three-dimensional tetrahedral lattices, planes of hexagonal rings, cylindrical tubes of hexagonal rings, and spheres of five- and six-membered rings. similar shapes of network covalent atomic solids are possible with carbon nitride, boron, and pure silicon (e.g., silicene is a graphene-like allotrope of pure silicon). in contrast, silicates exist as either highly ordered or amorphous (more random) three-dimensional lattices. what could explain why there are there no naturally occurring sheets, stacked sheets, cylindrical tubes, or spheres of network covalent atomic solids composed of silicon and oxygen (sio2)? would pure silicate structures make good lubricants or good electrical conductors?
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Chemistry, 23.06.2019 13:00
Using the periodic table complete the table to describe each atom type in your answers
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Chemistry, 23.06.2019 13:30
If a fast moving car making a loud noise approaches and moves past the person what will happen as the distance between the two increases?
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Chemistry, 23.06.2019 15:20
Which element below could be an isotope of berylliumsodium-10beryllium-10boron-9carbon-9
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Will a ant be considered a herbivore , carnivore , a scavenger or a decomposer?...
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