How many moles of NaCl are need to make 4.5 liters of a 1.5 M NaCl solution

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? a. simultaneous observation b. polarization c. fluorescence d. higher magnification

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?