subject
Chemistry, 17.09.2019 13:30 aricketts3901

In chemistry, we did a lab in which we had a certain mass of copper, performed multiple experiments on the copper, and at the end, extracted the copper from a solution and weighed it. the goal was that the mass of the final copper should be the same as the mass of the initial copper.
during the final step, the copper pieces are put in an evaporating dish and placed over boiling water in a beaker (on a hot plate) so that the copper will dry, the excess water will evaporate, and all that will be left is the mass of the copper. here is the question:
what is the maximum temperature to which the evaporating dish containing copper will be heated in part g? how is this known?
i really don't know the answer to this question or how to find out, as we did not take the temperature of anything during the experiment. the only thing i can think of is that water boils at 100 degrees celsius so the temperature of the steam (the heat of which evaporates the water) must be around then, so that must also be the max temp of the evaporating dish..
or i was also thinking that we know that max temp of the evaporating dish must be lower than the melting point of copper because the copper is dried but not overheated.

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 22.06.2019 06:00
The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
Answers: 1
question
Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
Answers: 1
question
Chemistry, 22.06.2019 10:00
In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent
Answers: 1
question
Chemistry, 22.06.2019 20:00
State one important difference between a physical change and a chemical change?
Answers: 1
You know the right answer?
In chemistry, we did a lab in which we had a certain mass of copper, performed multiple experiments...
Questions
Questions on the website: 13722363