Given the information below, determine the crystal structure. Consider only FCC and BCC structures as possibilities.
Lattice parameter a = 0.4997 nm
Powder x-ray: λ = 0.1542 nm
2θ (°) Constructive Interference 31.0, 36.0, 51.8, 61.6, 64.8

What is the number of moles in 15.0 g ash3?

Matches the chemical name of each oxide of phosphorus to its chemical formula

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)