A280.0 ml buffer solution initially contains 2.0×10−2 m of hcho2 and 2.0×10−2 m of nacho2. for formic acid, ka=1.8×10−4. in order to adjust the buffer ph to 4.20, should you add naoh or hcl to the buffer mixture?

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

The grooves or folds of the brain are called

Describing intermolecular forces use the drop down menus to match the type of intermolecular force to its name dipole dipole interactions dipole induced dipole interactions london dispersion forces hydrogen bond van der waals forces done