{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Hmwk 8 - 1 What is the limiting reactant when 31.3 g of...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1. What is the limiting reactant when 31.3 g of manganese (II) chloride, 48.3 g of chlorine, and 25.7 g of water react to produce manganese (IV) oxide and how much hydrochloric acid is produced? A) Manganese (II) chloride is the limiting reactant and 36.3 g of hydrochloric acid is produced. B) Chlorine is the limiting reactant and 24.8 g of hydrochloric acid is produced. C) Chlorine is the limiting reactant and 6.21 g of hydrochloric acid is produced. D) Manganese (II) chloride is the limiting reactant and 8.40 g of hydrochloric acid is produced. E) Water is the limiting reactant and 52 g of hydrochloric acid is produced. 2. What is the coefficient preceding O 2 when the following combustion reaction of a fatty acid is properly balanced using the smallest set of whole numbers? __ C 18 H 36 O 2 + __ O 2 → __ CO 2 + __ H 2 O 3. What is the mass of 7.80 × 10 18 carbon atoms (N A = 6.022 × 10 23 mol -1 )? 4. How many grams of sodium fluoride (used in water fluoridation and manufacture of insecticides) are needed to form 485 g of sulfur tetrafluoride? 3SCl 2 (l) + 4NaF(s) → SF 4 (g) + S 2 Cl 2 (l) + 4NaCl(s) 5. Aluminum reacts with oxygen to produce aluminum oxide which can be used as an adsorbent, desiccant or catalyst for organic reactions. A mixture of 82.49 g of aluminum and 117.65 g of oxygen is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is complete. A) Aluminum is the limiting reactant; 35.16 g of oxygen remain. B) Aluminum is the limiting reactant; 16.70 g of oxygen remain. C) Aluminum is the limiting reactant; 44.24 g of oxygen remain. D) Oxygen is the limiting reactant; 35.16 g of aluminum remain. E) Oxygen is the limiting reactant; 19.81 g of aluminum remain. 6. How many grams of Cl 2 can be prepared from the reaction of 16.0 g of MnO 2 and 30.0 g of HCl according to the following chemical equation? MnO 2 + 4HCl → MnCl 2 + Cl 2 + 2H 2 O
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
7. Aluminum oxide, Al 2 O 3 , is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al 2 O 3 .
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern