12A) The derived SI unit of electrical charge, equal to the quantity of electricity conveyed when a current of one ampere flows for one second? C _ U _ _ _ B?
17A) Any one of the mythical sea nymphs such as Asia or Calypso? O _ E _ N _ D?
20A) A type of upholstered seat without a back or arms which may also serve as a storage chest?
_ T _ O _ A _?
These are the last three and then I've finished. Thanks again for your help!