低活性引发剂的半衰期为( )。
A: t1/2
B: t1/2>6h
C: 1h>t1/2>6h
D: t1/2>16h
A: t1/2
B: t1/2>6h
C: 1h>t1/2>6h
D: t1/2>16h
举一反三
- 已知向量=(2,t),=(1,2),若t=t1时,∥;t=t2时,⊥,则( ) A: t1=-4,t2=-1 B: t1=-4,t2=1 C: t1=4,t2=-1 D: t1=4,t2=1
- 经过以下代码,t的结果是 t1=(1, 'a')[br][/br] t2=(2, 'b') t = t1 + t2 A: (3,'ab') B: ((1,'a'),(2,'b')) C: (1,'a',2,'b') D: (3,'a','b')
- 下列引发剂中活性最高的是( ) A: t1/2= 1×10-6 s B: t1/2= 2×10-6 s C: t1/2= 3×10-6 s D: t1/2= 4×10-6 s
- 一级反应半衰期公式为() A: t1/2=0.1054/k B: t1/2=0.693/k C: t1/2=Co/2k D: t1/2=0.693k E: t1/2=1/Cok
- 一级反应半衰期的公式为() A: t1/2=0.1054/k B: t1/2=0.693/k C: t1/2=0.693k D: t1/2=C0/2k E: t1/2=1/C0k