A piece of potassium metal is added to a sample of zinc chloride. If you started with 3.8 g of potassium and 8.4 g of zinc chloride, determine the limiting reactant, and the amount of metal produced

Explanation:

3.8g              8.4g

2K     +          ZnCl2      =  2 KCl     +     Zn

2 mol             1 mol                                 1 mol

39g/mol        135g/mol

Need 2 mol K for 1 mol ZnCl2

3.8g K/39g/mol = .97 mol K       8.4g ZnCl2/135g/mol  =  0.062 mol ZnCl2

0.062 mol ZnCl2 X 2 mol K/1 mol ZnCl2 =0.124 mol K

ZnCl2 limiting

0.062 mol ZnCl2 = 0.062 mol Zn

0.062 mol Zn x 65 g/mol =   4.0 g Zn

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: