post lab answer lab 9.docx - Chemistry 101 Spring 2018...

This preview shows 1 out of 2 pages.

Chemistry 101 Spring 2018 Student: Nadezhda Rosinskaya Email: [email protected] PostLab Assessment Answers № 9 Post Lab Assessment Questions-Experiment 9 -Oxygen, Oxygen, Oxygen What a Flame 1) Categorize the solids you tested today as pure substances or mixtures: Pure Substances: Copper powder, Selenium powder Sulfur Mixtures: Wooden splint, Steel Wool, Charcoal 2) Categorize the pure substances tested today elements vs compounds and metals vs nonmetals: Copper Powder: Metal element Selenium Powder: Non-metal element Sulfur: Non-metal element 3) a) What are the products of the chemical reaction that occurs when zinc metal is added to an aqueous solution of Hydrochloric acid? The products are aqueous solution of Zinc Chloride and Hydrogen gas. b) Write the chemical equation that represents the reaction Zn(s) + 2HCl (aq) → ZnCl 2 (aq)  + H2 (g) c) Write a procedure that explains how you would collect gas produced from this reaction in the laboratory *
Image of page 1

Subscribe to view the full document.

Image of page 2
You've reached the end of this preview.
  • Spring '14
  • Achan,Douglas
  • Chemistry, Test Tube, metal oxide

{[ 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