What is a semaphore Beetle?


What is a semaphore Beetle? Semaphores were used on North American models (Beetle and Bus) until early 1955. 1955 was the first year for a signal flasher relay and bullet…

Is tert-butoxide a good nucleophile?


Is tert-butoxide a good nucleophile? Tert-butoxide (tert-butoxide ion; tBuO-): (CH3)3CO-; the conjugate base of tert-butanol. A strong base (frequently used in E2 and enolate reactions) but a fairly poor nucleophile…

Is log difference same as percentage change?


Is log difference same as percentage change? First difference of LOG = percentage change: When used in conjunction with differencing, logging converts absolute differences into relative (i.e., percentage) differences. Thus,…