一、取含化石的灰黑色的矿石进行下列实验。(a)把矿石粉碎,称取1克放入烧杯内,加入足量稀盐酸并加热使之溶解。在0℃、1大气压下有210毫升二氧化碳气体产生。反应完后有5%的黑色不溶物,溶液呈黄色。把此溶液过滤后分成黑色不溶物A和黄色溶液B。(b)在溶液B中加入足量稀氨水,生成 First, take the fossil black gray ore for the following experiment. (a) Pulverize the ore, weigh 1g into a beaker, add enough dilute hydrochloric acid and heat to dissolve. There was 210 ml of carbon dioxide gas generated at 0°C and 1 atmosphere. After the reaction, there was 5% black insolubles and the solution was yellow. The solution was filtered and separated into black insoluble matter A and yellow solution B. (b) Add enough dilute ammonia in solution B to generate