皮皮学，免费搜题
登录
搜题
【简答题】
选词填空 A.litter B. shortage C. spread D. dispose of E. avoid 1.The _______ of oil will probably drive prices up. 2.You should _______ mentioning his disease. 3.I hate people who _______ in the forest 4.we started using rivers as a place to _______ our garbage. 5.The bird _______ its wings.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】某二元弱酸H2A的Ka1=6×10-8,Ka2=8×10-14,若某浓度为0.05mol/L,则浓液中的A2-约为( )A 6×10-8 mol/L B 8×10-14 mol/L C 3×10-8 mol/L D 4×10-14 mol/L
A.
6×10-8 mol/L
B.
8×10-14 mol/L
C.
3×10-8 mol/L
D.
4×10-14 mol/L