using that attached image answer the following questions and show all work with

Question

using that attached image answer the following questions and show all work with correct significant digits.
density of water is 1.00000 g/cm ^3 @ 4 degrees C. Osmium density is 22.5 g/cm^3

1.) calculate the volume of the metal sample for each trial ( 1&2)
2.) calculate the density of the metal sample for each trial, then determine the average density.
3.) knowing the accepted value for the density of yiur metal sample, determine the percent error in your density measurement
4.) if there were air bubbles in the metal sample when submerged in the pycnometwr, how would it affect the density calculation? woukd it be hiugher or lower? Explain.
5.) justify the number if significant figures reported.

empty pycnometer, the mass of the water can be determined, and then the volume of water using density. The difference in volume represents the volume of the metal. Do a second trial using the same type of metal, but a different sample if possible. Be sure that the metal is completely dry before finding the mass. Data Trial 2 Trial 1 Identity of Metal Sample Mass of Empty Pycnometer (flask and stopper) 30-100 Mass of Pycnometer filled with water Mass of Metal Sample loaa Mass of Pycnometer with metal and water 3 21 Temperature of Water (oC) Density of Water at that temperature (from table)

Explanation / Answer

From the data

Trial 1

1) Volume of metal sample = (60.321 - 59.764) = 0.557 ml

2) density of metal sample = 0.692/0.557 = 1.24237 g/ml

Trial 2

1) Volume of metal sample = (59.991 - 59.706) = 0.285 ml

2) density of metal sample = 0.420/0.285 = 1.47368

average density = 1.35802 g/ml

3) percent error = (1.35802 - 0.99996) x 100/0.99996 = 35.81%

4) Air bubbles would change the volume of metal measured, it would be higher than expected value and thus the density calculated would be lower than we obtained from this experiment.

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.