what is the properties of oil paints and what is chemical f挥感板实蒸散气调史住ormula of it (随便举个例子化学式)

帮你写了一小段：

杀移陈准磁练兰White lead is a kind of oil paints,which is 非哪鸡东纪请丝really widely used in art.

And the chemical formula is Pb(OH)2·2PbCO3.

We know air c来自ontains hydrogen sulphide(H2S),which can re360问答act with white lead and generate lead sulfi洲数de(PbS). Lead sulfide is black, so white lead has a peoperty,that is,it slowly becomes 利衡祖宗希black in air.

翻译成中文就是：铅白是一种在美术上广泛使用的油画颜料，它的化学式是Pb(OH)2·2PbCO3。我们知道空气中含有硫化氢，它能和铅白反应并生成黑色的硫化铅，这使得铅白具有在空气中慢慢变黑的性质。