if 15.35 ml of .35 m naoh are needed to complete the titration of 25.00 ml of unknown citric acid solution. what is the concentration of the acid in molarity

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

What must happen before a body cell can begin mitotic cell division

Imagine that twenty i. u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?