Using the activity series provided. Which reactants will form products?
Na > Mg > Al> Mn > Zn > Cr> Fe > Cd > Co > Ni > Sn> Pb >
> Sb>Bi > Cu> Ag
O Ag +NaNO3 →
O Fe + Al2O3 →
O Ni+ Naci -
O Fe + Cu(NO3)2 →

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the most common reason for matter changing its state?