Erwin schrödinger developed the quantum model of the atom. what scientific knowledge was necessary for schrödinger’s work?
a the discovery of the electron
b the discovery of gamma rays
c the invention of computers for complex calculations
d the invention of microscopes for seeing subatomic particles

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.

Drive down any three characteristic of modern periodic table

What does the mass of 0.7891 mol of ferric oxide (fe2o3)