Mass-Mass Mole-Mole

    1) If you want to produce 250. mg of aspirin (C₉H₈O₄) from the reaction of C₇H₆O₃ and C₄H₆O₃, what is the minimum amount of C₇H₆O₃ that is needed?

2C₇H₆O₃(s) + C₄H₆O₃(l) 2C₉H₈O₄(s) + H₂O(l)

(a) 2.50 x 10² g

(b) 6.21 x 10³ g

(c) 1.42 x 10^-1 g

(d) 1.92 x 10^-1 g

(e) 1.92 x 10² g

 

    2) 12.0 moles of iron react with 10.0 moles of oxygen to form iron(III) oxide. Which of the following statements are true?

4Fe(s) + 3O₂(g) 2Fe₂O₃(s)

(a) There will be 2.0 moles of iron left when the reaction is complete.

(b) 10.0 moles of oxygen will be consumed when the reaction is complete.

(c) There will be 12.0 moles of iron(III) oxide produced when the reaction is complete.

(d) 12.0 moles of iron react during the reaction.

(e) 9.0 moles of oxygen react during the reaction.

 

    3) If you want to produce 2.00 kg of ethylene glycol from the reaction of C₂H₄Cl₂ and Na₂CO₃, what is the minimum amount of C₂H₄Cl₂ that is needed?

C₂H₄Cl₂(l) + Na₂CO₃(s) + H₂O(l) C₂H₆O₂(l)+ 2NaCl(aq) + CO₂(g)

(a) 2.00 g

(b) 1.23 x 10⁷ g

(c) 3.42 x 10³ g

(d) 3.19 x 10³ g

(e) 3.19 g

    4) If you want to produce 100. mg of tungsten from the reaction of H₂ and WO₃, what is the minimum amount of H₂ that is needed?

WO₃(s) + 3H₂(g) W(s) + 3H₂O(l)

(a) 1.00 x 10² g

(b) 1.10 x 10² g

(c) 2.87 x 10^-4 g

(d) 3.26 x 10^-3 g

(e) 3.26 g

5) 12.0 moles of iron react with 10.0 moles of oxygen to form iron(III) oxide. Which of the following statements are true?

4Fe(s) + 3O₂(g) 2Fe₂O₃(s)

(a) 12.0 moles of Fe will be consumed when the reaction is complete.

(b) 10.0 moles of O₂ will be consumed when the reaction is complete.

(c) There will be 6.0 moles of Fe₂O₃ produced when the reaction is complete.

(d) 10.0 moles of Fe react during the reaction.

(e) 10.0 moles of O₂ react during the reaction.

 

    6) If you want to produce 1.00 kg of silicon carbide from the reaction of SiO₂ and carbon, what is the minimum amount of SiO₂ that is needed?

SiO₂(s) + 3C(s) SiC(s) + 2CO(g)

(a) 2.40 x 10⁶ g

(b) 9.00 x 10² g

(c) 1.50 x 10³ g

(d) 1.50 g

(e) 1.00 g

    7) If you want to produce 50.0 mg of deet, C₁₂H₁₇NO, from the reaction of C₈H₇OCl and C₄H₁₁N, what is the minimum amount of C₈H₇OCl that is needed?

C₈H₇OCl(l) + C₄H₁₁N(l) C₁₂H₁₇NO(l) + HCl(g)

(a) 5.00 x 10¹ g

(b) 1.48 x 10³ g

(c) 9.56 x 10^-3 g

(d) 4.04 x 10^-2 g

(e) 4.04 x 10¹ g

    8) 12.0 moles of iron react with 10.0 moles of oxygen to form iron(III) oxide. Which of the following statements are true?

4Fe(s) + 3O₂(g) 2Fe₂O₃(s)

(a) There will be 0.0 moles of iron left when the reaction is complete.

(b) There will be 0.0 moles of oxygen left when the reaction is complete.

(c) There will be 6 moles of iron(III) oxide produced when the reaction is complete.

(d) 10.0 moles of iron react during the reaction.

(e) 5.0 moles of oxygen react during the reaction.

   9) 10.0 moles of iron and 12.0 moles of chlorine to form iron(III) chloride. Which of the following statements are true?

2Fe(s) + 3Cl₂(g) 2FeCl₃(s)

(a) 10.0 moles of Fe will be consumed when the reaction is complete.

(b) There will be 2.0 moles of Cl₂ left when the reaction is complete.

(c) There will be 12.0 moles of FeCl₃ produced when the reaction is complete.

(d) 8.0 moles of Fe react during the reaction.

(e) 10.0 moles of Cl₂ react during the reaction.

 

    10) 10.0 moles of iron and 12.0 moles of chlorine to form iron(III) chloride. Which of the following statements are true?

2Fe(s) + 3Cl₂(g) 2FeCl₃(s)

(a) There will be 2.0 moles of Fe left when the reaction is complete.

(b) There will be 2.0 moles of Cl₂ left when the reaction is complete.

(c) There will be 20.0 moles of FeCl₃ produced when the reaction is complete.

(d) 4.0 moles of Fe react during the reaction.

(e) 4.0 moles of Cl₂ react during the reaction.

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