To convert a signed binary int to a decimal number, use the following algorithm. We illustrate the algorithm on two four-bit examples: 1110 and 0101. If the leftmost bit is a 1, the number is negative. Do the following... (1110 starts with a 1.
Copper pyrites is a common name for the mineral chalcopyrite, which has a formula CuFeS2. It can be considered to be made up of Cu+ Fe3+ S2- ions but there is covalent character.
Copper(II) sulfate, also known as cupric sulfate, copper sulfate, blue vitriol, or bluestone, is a chemical compound. Its chemical formula is CuSO 4. It contains copper in its +2 oxidation state. It also contains sulfate ions. It is a blue solid that can kill fungi. It is also used to purify copper metal.