Burning match in physical or chemical change and why

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 approximate vapor pressure when the gas condenses at 70 degrees celsius

Which statement would indicate the presence of an acid