PLEASE HELP ME I NEED TO FINISH BY 11 PM What would be the anode in a magnesium and zinc galvanic cell?
A. Mg2+
B. Zn2+
C. Mg(s)
D. Zn(s)

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

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