As frequency of waves increases, wavelength question 21 options: decreases increases becomes faster remains constant

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

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 .