The half-life of Carbon-14 is 5700 years. After 17,000 years, there are 7 g of 14C remaining in a fossil. Approximately how many grams of 14C were in the fossil initially?

This drawing shows a human body system. what is the primary function of this body system?

An observation that requires measurement is called quantitative observable or qualitative

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