Labpaq Lab Techniques and Measurements Essay

3. Analyze: What do you notice about the density of the Styrofoam pieces? The density remains the same.

Procedure: I used a ruler, thermometer, and scale to take measurements. I used a graduated cylinder, short step pipet, scale, and ruler to determine volume and density. I used a volumetric flask, graduated pipet, pipet bulb, scale, and glass beaker to determine concentrations and densities of various dilutions.

7.The air dried filter paper was then placed on the weighing scale and results were recorded

F. How did the magnet’s density measurement using the Archimedes’ Principle compare to the density measurement using the calculated volume? Which method might be more accurate? Why?

5. Calculate the density of an object that has a mass of 43 g and a volume of 56.0 mL.

In this lab experiment our main focus was to get skillful in using tools such as the metric ruler, balances, thermometer, and graduated cylinder to capture measurements of length, mass, temperature and volume. Additionally, this lab helped us to become more familiar with the uncertainty of measurements, as well as becoming efficient with rounding our measurements to the correct numbers of significant figures. Our results are measured consistently with rounding to the closest answer we could possibly acquire as the data can tell you.

14. Calculate the volume of the magnet by multiplying the length × width × height, record in Data Table 5.

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

4. A solid block of exactly 100.0 cm3 has a mass of 153.6 g. Determine its density. Will the block

D. A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/mL,

The starting volume of water was 25 ml. To find the volume of the pennies by itself, the volume of water/pennies together needs to be subtracted from the volume of the water. To find the density the equation D=M/V must be used. The mass of five post 1982 pennies is 12.37g. The total volume of five post pennies and the water is 26.5ml. The volume of five post pennies alone is 1.5ml. 26.5ml-25ml=1.5ml The density for five post pennies is 8.25g/ml. 12.37g/1.5ml=8.25g/ml The mass of ten post 1982 pennies is 25.59g. Ten post pennies and water have a volume of 28.5ml. Ten pennies volume alone is 3.5ml 28.5ml-25ml= 3.5 The density of ten post pennies is 7.31g/ml. 25.59g/3.5ml=7.31g/ml The mass of fifteen post pennies are 38.21g. The volume of fifteen pennies and the water is 30.5ml and the pennies volume alone is 5.5ml. 30.5ml-25ml=5.5 The density of fifteen post pennies is 6.95g/ml. 38.21g/5.5ml=6.95g/ml The mass of twenty post pennies is 50.78g. The volume of twenty pennies and water together is 32.5ml and the post pennies alone are 7.0ml. 32.5ml-25ml=7.0. The density of twenty post pennies is 7.25g/ml. 50.78g/7.0ml=7.25g/ml. The average density of pre 1982 pennies is 7.44 g/ml. 8.25g/ml + 7.31 g/ml + 6.95g/ml + 7.25g/ml= 29.76g/ml, 29.76g/ml / 4= 7.44 g/ml

The volume of a small test tube and a thin-stemmed pipet were determined in this section of the lab. Water was poured into a small test tube until the water reached the very top edge of the test tube. The test tube was then emptied into a plastic 25 mL graduated cylinder and volume was measured and recorded into data table 3. A think-stemmed pipet was completely filled with water. Drops were carefully counted and emptied into the empty plastic 25 mL graduated cylinder until the water level reached 1 mL. The number of drops in 1 mL was recorded into data table 3. The thin-stemmed pipet had a total volume of 4 mL and that was also recorded into data table 3.

The purpose of this lab was for the student to get involved with his or hers new lab kit as well as being able to know, identify and use each other tools provided in the kit. Another key learning aspect of this lab is to teach the student how to measure properly the many units in the SI system. I will be using laboratory dilutions, measurements, and weights to then calculate using algebraic formula.

The density of objects A and B is 7.44 g/cm3 which is close to the density

After that, it is crucial to convert the mass to volume. The water density at a temperature will aid this process. The compliance of the Volume Occupied by 1.000g of Water Weigh in Air table is deemed necessary throughout the comparison.