"La tecnología es un siervo útil, pero un amo peligroso". Christian Lous Lange. "El espíritu humano debe prevalecer sobre la tecnología". Albert Einstein. Reflexion forfa.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .