In a mixture of 2 ideal gases, a and b, pa = 0.2pb, what is the mole fraction of a?

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?

Describe the structure of ammonium lauryl sulfate. refer to the given diagram. your answer should include the type of bonding, the elements contained, and the size and shape of the molecule. write a short paragraph.

How are casts formed by decaying organisms? organisms turn into rock over time. organisms leave carbon residue on a rock. organisms leave impressions in sediment that hardens into rock. impressions left by organisms are filled in with sediment that hardens into rock.