Identify the kind of mixture of powdered charcoal and powdered sugar. suggest a technique for separating it.
a. homogeneous; decanting
b. heterogeneous; decanting
c. homogeneous; distillation
d. heterogeneous; distillation
e. homogeneous; dissolving followed by filtration and distillation

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

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 .