lab 2 mass relations in a chemical reaction

lab 2 mass relations in a chemical reaction - 4.3 Lab 2...

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

View Full Document Right Arrow Icon
4.3 Lab 2 Mass Relations in a Chemical Reaction EXTRA CREDIT Jennie Chang (odd) Allison yee (Partner- odd) Sharon Oh (Partner- even)
Image of page 1

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

View Full Document Right Arrow Icon
Data Table: Mass of .00500 moles sodium phosphate 1.90g Mass of .00750 moles zinc acetate 1.65 grams Mass of 50 ml beaker 29.70 g Mass of filter paper .95 g Mass of filer paper, beaker, and dry precipitate 50.14 g Mass of dry precipitate, zinc phosphate 2.26 Observations: Day One : Before After Zinc: Crystals Crystals/gel Sodium: snowflakes clear Zn(C2H3O2) + Na2PO4= turned white and foggy Filter: water being removed, it turned glue and shampoo like Day Two: Solution looks like powder; like dry wall, plaster-y Calculations: 1. The mass of the zinc acetate and sodium phosphate: Zinc acetate- Equation: Mass= moles x molecular weight of Na3PO4 x 12 H2O Substitute: Mass= 0.00500 mol x 379.6 Solve: 1.9 g Sodium phosphate: Equation: Mass= moles x molecular weight of Zin(C2H3O2)2 2H2O Substitute: mass= 0.00750 mol x 219 Solve: 1.65g 2. Using a 4 step problem, calculate the mass of the zinc phosphate that theoretically should have formed(Tgrams) based on the balanced equation and the 0.00750
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