Which of the following is not one of the ways that weathered nutrients can return to an ecosystem's environment? 1.dissolved in water. 2.released into the atmosphere as a gas. 3.taken from the soil by plants. 4.taken from plants by animals.

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

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest