What is the average time it took the car to travel 0.25 meters?

This is a mixture that has the same composition throughout.

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

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.