You are on a field trip to a nearby lake for biology class and want to perform a quick analysis of the water’s approximate ph level. which ph measurement system would you use and why?

Sample Response: Using pH paper would be best for doing a quick measurement in the field. It does not need to be calibrated and the papers provide an instant estimate. Answer on Ed

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.