Balance each equation 1. _2__Na + ___MgF₂ _2__NaF + ___Mg

2. ___Mg + ___HCl ___MgCl₂ + ___H₂

3. ___Cl₂ + ___KI ___KCl + ___I₂

4. ___NaCl ___Na + ___Cl₂

5. ___Na + ___O₂ ___Na₂O

6. ___Na + ___HCl ___H₂ + ___NaCl

7. ___K + ___Cl₂ ___KCl

Evaluate this exponential expression,8. (2 + 3)2 – 42

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.