Herschel observed that an otherwise colourless solution of _________ in water emitted a blue colour under certain circumstances.
举一反三
- FDM can be very efficient under certain circumstances
- She<br/>made it clear that __________<br/>would she cancel the trip. A: under<br/>certain circumstances B: in<br/>exceptional circumstances C: under<br/>no circumstances D: under<br/>normal circumstances
- What is the procedure of preparing the mixture?1)Put the carrageenan solution in a 55-60 degrees Celsius water bath.2)Incubate at 55 degrees Celsius in the dark.3)Dissolved a certain amount of gelatin and carrageenan with KCl solution in water bath.4)Add a certain amount of TG enzyme to the dissolved gelatin solution while cooling.5)Mix the gelatin solution and the carrageenan solution. A: 32154 B: 13524 C: 31452 D: 13254
- Under no circumstances ____ the party
- A solution that appears blue absorbs blue light.