Density of Pennies

Density of Pennies Introduction/Purpose: The purport of this laboratory try out was to learn how to properly address density. Also another purpose was to learn how to correctly use water displacement to calculate the density of pennies. Materials: * 15 pennies minted in the beginning 1982 * 15 pennies minted in or after 1982 * 50 mL graduate cylinder * Triple ventilate Balance Procedure: 1. Check to see if your balance pointer is on zero while all the assignable masses argon on zero. This will get you more accurate results. 2. steer your weigh paper on the pan. 3. Then move the movable masses until your pointer evens out at zero again. 4. personality the mass of the weigh paper. 5. Recalibrate your balance. 6. While keeping the weigh paper on the pan, determine the mass of 15 pennies minted before 1982. usurp your measurement two more times, for a total of 3 trials. 7. Repeat all of step 6 with the 15 pennies minted in 1982 or after. 8. Pour 25 mL of water into the 50 mL graduated cylinder. Add the 15 pennies minted before 1982 into the graduated cylinder. Find and record the volume of the pennies 9. Repeat step 8 with the pennies minted in 1982 or after. 10. Review your data for any tumid differences between the trials.

If there are any large differences, cite the appropriate measurement. Quantitative Data: Mass of Pennies| | | | | Object| political campaign 1 (grams)| Trial 2 (grams)| Trial 3 (grams)| weight-lift Paper| 0.90| 0.90| 0.90| Pennies made before 1982| 47.20| 47.20| 47.20| Pennies made in 1982 or later| 38.50| 38.55| 38.53| Volume of Pennies| | | Volume| mL| water system| 25.0| Water w/ pennies made before 1982| 30.8| Water| 25.0| Water w/ pennies made in 1982 or later| 30.9| Calculations: Pennies made before 1982: (Trial 1) + (Trial 2) + (Trial 3) divided by 3 subtract (Weigh Paper): 47.20 g + 47.20 g + 47.20 g = 141.6 g 141.6 g divided by 3 = 47.20 g... If you involve to get a full essay, order it on our website: Orderessay

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