12. What volume of 18.0 M sulfuric acid must be used to prepare 12.0 L of 0.195 M \(\text{H}_2\text{SO}_4\)?(A)90 mL(B)45 mL(C)130 mL(D)65 mL

13. Iron is produced from its ore by the reactions:\(2\text{C(s)} + \text{O}_2\text{(g)} \to 2\text{CO(g)}\)\(\text{Fe}_2\text{O}_3\text{(s)} + 3\text{CO(g)} \to 2\text{Fe(s)} + 3\text{CO}_2\text{(g)}\)How many moles of \(\text{O}_2\)(g) are needed to produce 1 mole of Fe(s)?(A)0.5 mole \(\text{O}_2\)(B)0.75 mole \(\text{O}_2\)(C)1 mole \(\text{O}_2\)(D)1.5 mole \(\text{O}_2\)

12. What volume of 18.0 M sulfuric acid must be used to prepare 12.0 L of 0.195 M \(\text{H}_2\text{SO}_4\)?

(A)90 mL

(B)45 mL

(C)130 mL

(D)65 mL

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