3.  Symbol - Zn  Atomic # - 30  Atomic Mass- 65.38  Group - 12  Period - 4  Physical state room temperature. - Solid  Density - 7.14 g  Color- Metallic/Silver  Type of Metal - Base  Isotopes - 64,66,67,68,70  Most common in Nature - 64

4. Zn (g) + CuO (s)  ZnO (s) + Cu (l) This was a problem that was in the text Introductory Chemistry A Fundation- Chapter 6 # 38 A) Zn (g) + CuO (s)  ZnO (s) + Cu (l) Balanced Zn (g) + CuO (s)  ZnO (s) + Cu (l)

5. CL : Zn (NO 3 ) 2 (aq) + 2 NaCl (aq)  ZnCl 2 (aq) + 2 NaNO 3 (aq) OH: Zn (NO 3 ) 2 (aq) + 2 NaOH (aq)  Zn(OH) 3 + 2 NaNO 3 (aq) S : Zn (NO 3 ) 2 (aq) + 2 NaPO 4 (aq)  ZnS (aq) + 2 NaNO 3 (aq) PO 4 : Zn (NO 3 ) 2 (aq) + Na 2 PO 4(aq)  ZnPO 4(aq) + 2 NaNO 3 (aq) SO 4 : Zn (NO 3 ) 2 (aq) + Na 2 SO 4(aq)  ZnSO 4 (aq) 2 NaNO 3 (aq)

6.  2 Zn (s) + O 2  2 ZnO   100g O mol O 2 = 3.125 moles O  32 g  1.53 moles Zn X 2 = 3.06  3.125 moles O = 3.1  Zinc is the limiting reagent

7.  Zinc is found in most of our cells through out the body. This element is critical for enzyme function and a healthy immune system. Zinc is utilized by the body to maintain taste and smell senses. Our bodies incorporate trace amounts to promote effective wound healing, making DNA, and growth and development during pregnancy. Furthermore, zinc was identified as a key developmental mineral for childhood and adolescence growth.  Dietary levels of zinc are found in many foods to include: red meat, poultry, beans, nuts, whole grains, dairy products and certain seafood’s such as oysters.  Zinc can also be introduced to the body by way of a multivitamin/dietary supplement.

9.  Thank you!