How are igneous rocks formed?

a. from the cooling & hardening of molten material
b. by being deposited in layers from weathered rock material
c. by slowly being deposited from dripping water on cave floors over time
d. from two or more rocks that have morphed together under intense pressure

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

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

Which of the following is not true about the atomic model of substances?