Determine whether the stopcock should be completely open, partially open, or completely closed for each activity involved with titration. a. Close to the calculated endpoint of a titration
b. At the beginning of a titration
c. Filling the buret with titrant
d. Conditioning the buret with titrant

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

and the person below goggled it.

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6.4 cm (max) - 25 cm (min)

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.