What situation do you use a volumetric flask, conical flask, pipette and graduated cylinder? explain your answer from the accuracy aspects of these apparatus.

When only rough approximations are needed, we use a conical flask.

When we want to measure liquid volumes to an accuracy of within about 1%, we use the graduated cylinders.  They are for also used general purpose, but not for sensitive quantitative analysis.

When extreme precise or accurate measurements are needed for dilution or preparation of liquid samples, we use the volumetric flask to contain it.

If we are preparing to perform titration, we will have to use a pipette to transfer very accurate amounts of sample. 

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

it was spontaneous.

"ain't i a woman? " is the name given to a speech, delivered extemporaneously, by sojourner truth, (1797–1883), born into slavery in new york state.sojourner truth' delivered her famous speech "ain't i a woman? " (which did not have a title at that moment) was given without any previous preparation. her dissertation took place at the women's convention in akron, ohio, in 1851.