HURRY!! In models of molecules, gray spheres are carbon atoms,
white spheres are hydrogen atoms, red spheres are oxygen
atoms, and blue spheres are nitrogen atoms.
Which model represents a molecule of ammonia, NH3 ?

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3

What is the correct lewis dot structure for arsenic?

What powdery mineral is a health hazard when airborne?