题目

Eliza is the s girl in herclass. She always does things by herself. 答案：【1】shyest把10gCO和C02混合气体通入过量的石灰水，反应后过滤，得干燥的固体10克，原混合气体中CO的质量是（　　）A．5 gB．4.4 gC．5.6 gD．10 g