zLAB 1 - Lab 1 Introduction to the Laboratory Procedures...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Lab 1: Introduction to the Laboratory Procedures for Obtaining and Presenting Data I. Materials The materials used for this lab were mostly tools used for measurement of various  substances and varying amounts of each.  Students used 3 different pipettes, 100 mL beakers, a  100 mL graduated cylinder, a 125 mL Erlenmeyer flask, a meter stick as well as an electronic  balance were all used to measure given amounts throughout the lab.  The substances measured  in this lab were a bottle of colored water and 10 g of NaCl. II. Procedure This lab was composed of 4 major parts, each with a few key steps.  The first part of the  lab involved the students measuring mass of the NaCl.  2 g of the NaCl was measured using the  electronic balance and then added to 50 mL of water.  The students then compared the predicted  mass of the water/salt solution with the actual mass given by the electronic balance.  My group  found the actual mass to be 51.23 g, which was .77 g less than the predicted 52 g.  The probable  causes of this discrepancy were most likely involved in the transfer/measurement of the water  and the salt. The next major part to the lab involved the students practicing measuring volume  using various provided tools.  With a 1 mL pipette, students practiced filling the pipette with  colored water and then releasing until the level was at the 0.8 mL mark.  The same exercise was  repeated with a 5 mL pipette, measuring 3.2 mL and 4.8 mL of water, and then once more with  the 10 mL pipette, measuring 6.1 mL and 7.3 mL of colored water.  Students then practiced using  a Micropipette, measuring 800  μ L of distilled water and using a weighing boat to weigh it on the  electronic balance.  This was repeated until 10 masses had been calculated:
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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