A.2t1/2=t1/2’ B.t1/2=2t1/2’ C.t1/2=t1/2’ D.t1/2=4t1/2’
A.二級反應(yīng) B.三級反應(yīng) C.0.5級反應(yīng) D.0級反應(yīng)
A.43.29s B.15s C.30s D.21.65s