Give two reasons why scientists create models to study atoms.

How have the greenhouse gasses increased from the year 2000 to 2018

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

Find the mass, in grams, of 5.00*10^23 molecules of f2