When working with a buret, one should take care that .

A. the tube below the stopcock is completely filled.
B. the buret is conditioned by rinsing it with titrant before use.
C. the last drop of liquid on the tip is flushed into the analyte.
D. all these cautions should be observed.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

i think its 5049.

i hope this !

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)