Laboratory Equipment and Safety: Mass and Volume Measurement Experiment, Assignments of Chemistry

Download Laboratory Equipment and Safety: Mass and Volume Measurement Experiment and more Assignments Chemistry in PDF only on Docsity! Triple Beam Balance (g)Object / Name: Date: Experiment #: 1 Title: Equipment, Safety, and Mass/Volume Measurement Purpose: To go over the safety aspects of working in the chemistry lab. Go over the equipment that will be used in the chemistry lab. To observe mass and volume measurements. Procedure: 1. Review commonly used laboratory equipment. 2. Review commonly available safety equipment. 3. Measure mass of cellphone using analytical scale #1 4. Measure mass of graduated cylinder using analytical scale #1 5. Measure mass of metal cylinder using analytical scale #1 6. Repeat mass measurements of each object on scale #2 and scale #3 7. Measure mass of metal cylinder on triple beam balance. 8. Measure Mass of Cellphone using 3 single pan balance scales #1-#3 9. Measure mass of graduated cylinder on single pan balance scale #1 10.Deliver 10mL of water from buret 11.Deliver 10mL of water from pipet 12.Deliver 10mL of water from 10mL graduated cylinder 13.Deliver 10mL of water from 25mL graduated cylinder 14.Deliver 10mL of water from 100mL graduated cylinder Data/Results/Calculations: Analytical Scale Mass Measurements Object Scale#1 Mass (g) Scale #2 Mass(g) Scale #3 Mass(g) Cellphone 92.9738 92.9738 92.9748 Graduated cylinder 47.6204 47.6214 47.6219 Metal Cylinder 21.5953 21.5952 21.5957 Triple beam balance Mass Measurements / Single Pan Balance Mass Measurements Object Scale 1 Mass (g) Scale 2 Mass(g) Cellphone 92.96 92.98 92.98 Graduated cylinder 47.62 Volume Measurements Container Weight (g) mL delivered Percent error buret 10.0722 10.09 0.10% pipet 9.9803 10.00 0% 10mL graduated cylinder 10.0633 10.08 0.80% 25mL graduated cylinder 9.7781 9.80 2.00% 100mL graduated cylinder 10.9802 10.40 4.00% Volume measurement calculations V=M/D Density of water at 21.4 degrees C = 0.99791g/mL Buret: V =10.0722g/0.99791=10.09mL Percent error: abs(10.10-10.09)/10.10 x 100 = 0.10% Pipet: V = 9.9803g/0.99791=10.00mL Percent error: abs(10.00-10.00)/10.00 x 100=0.00% 10mL graduated cylinder: V = 10.0633g/0.99791=10.008mL Percent error: abs(10.00-10.08)/10.00 x 10= 0.80% 21.35Metal Cylinder