What is the pH of a solution that has 7.8x10-9 [H+]?

What is the molar mass of potassium nitrate, kno3

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

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils