Balance Cu + Zn(NO3)2 --T No reaction
Pb + Mg(NO3)2 -
No reaction
Zn + Cu(NO3)2 -
reaction
Zn + Mg(NO3)2 =
reaction
Mg + Pb(NO3)2 →
reaction
+
Cu + AgNO3
reaction
Zn + AgNO3 -
reaction
Cu + HCl –
No reaction

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

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.