Suppose you need to prepare 250. 0 ml of a ph=3. 60 buffer that has a total buffer concentration of formic acid + formate of 0. 030 m. How many moles of formic acid will you need? the pka of formic acid is 3. 75.

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

Its probably the possible factors tt, tt, tt, 

Ithink the answer is d.