Answer

the asnwer is 1 and 4

<span>1) osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant r.

Call: P = osmotic pressure; C = molarity; T = absolute temperature

=> P = C * T * r

2) </span><span>write an equation that will let you
calculate the molarity c of this solution. your equation should contain
only symbols. be sure you define each symbol other than r.
</span><span>

</span>=> C = P / (rT)

**Answer: C = P / (rT)**

**Answer:**

4Al203 + 9Fe -> 3Fe3O4 + 8Al

**Amount of Al on reactant side: 8**

**Amount of Al on product side: 8**

**Amount of O on reactant side: 12**

**Amount of O on product side: 12**

**Amount of Fe on reactant side: 9**

**Amount of Fe on product side: 9**