If a nitrogen atom has 7 protons and 7 neutrons, what is its mass?

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 causes the appearance of lines in a emission spectrum

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?