During a lab investigation robert was given 5 samples of different metals. each sample was the same color and had the same volume. he was asked to determine which of the 5 samples was copper. based on robert’s knowledge of physical properties of matter, describe how he can do this.

What diagram shows the ionic compound of magnesium oxide

How do scientists think that gravity affected the formation of our solar system?

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit