Chemistry, 02.11.2019 16:31 ddmorse2015owug6f
An experiment applies heat to a substance and produces a gas that is a new and different substance. choose the true statement.
a. this represents a physical change only.
b. this represents a chemical change only.
c. this represents both a physical and a chemical change.
d. this represents neither a physical change nor a chemical change.
Answers: 2
Chemistry, 22.06.2019 14:00, claudia122752
Will mark brainliest how many electrons can be held in the energy level n = 4?
Answers: 1
Chemistry, 22.06.2019 21:20, paatnguyyen
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 .
Answers: 2
An experiment applies heat to a substance and produces a gas that is a new and different substance....