Which of the following describes the bohr atomic model

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

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

Which metals are called noble metals