Volume Three

Contrasting Liquid Volumes to Determine Precision and Accuracy of Experimental Measurement Introduction The purpose of this experiment is to compare and contrast liquid volume reading values of different measuring devices, determining the precision and accuracy of experimental measurement. This was done through use of a graduated cylinder, a serological pipette, and a variable volume pipette. In laboratories, many kinds of containers and devices are available for measuring liquid volume. For example

found with the formula D=m/v. Which is defined as mass divided by volume to find the density. Procedure First, each metal’s description and weight was recorded. Additionally, the weights of each cylinder used was recorded. Next, a graduated cylinder was filled with 20mL of water and unknown metal II was fully submerged in the water 3 times. Each time, the volumes were recorded and the difference between the final volume and initial volume was calculated. This test was repeated for unknown metal IV.

With volume and mass determined, the density formula (d = m/V) was used to determine the densities of each rock and recorded in g/ml. In the third stage of this experiment, the density of a liquid was determined and compared to known standards. A 100ml beaker

the amount of material present. The formula for density is density=mass/volume(d=m/v). Introduction Density is a measurement of the amount of mass that have a specific volume. Density is used for identifying substances. Density is reported as g/ml or g/cm³. This lab will focus on measurements. Mass and volume are physical properties that can be easily measured. In the lab, the mass was measured in grams and the volume was measured in ml. Limitations on results The percent error when

mass and volume from the small pieces of clay from all three trials and I find the average which is 14.7g (mass) and 8.7cm3 (volume). Then I divide using thee formula d=m/v and for density I got 1.7g/cm3, rounded to the nearest tenth. Next I did the same for medium of all three trials in which I got 22.5g for the average of the mass and 13.3cm3 for the volume. I divide using the same formula and also got 1.7g/cm3, rounded to the nearest tenth. Lastly I find the average of mass and volume for large

Together the mass of the water and the beaker is 47.8462g.the mass of the water is 19.0842g by using the equation of density equal mass over volume. Plugging the numbers in the equation with is 19.0842g divided by 19.9ml equals the density of water came out to be 0.959g/ml. The second experiment was the unknown substance. The unknown substance was salt water. The volume of liquid was 20.1 ml. the mass beaker

Boyle's Law is where at constant temperature, the volume of a gas is inversely proportional to its pressure; it was named after the man who discovered it, Robert Boyle (West, The Original Presentation of Boyle's Law). In the past, he tested his theory by using a siphon to trap air and see the affects that would occur as he added pressure to the air in his siphon (Fowler, Boyle's Law and the Law of Atmospheres). More recent tests have been done by attaching a syringe to a pressure detector. After

Define Vocabulary Density: The degree of compactness of a substance Mass: A coherent, typically large body of matter with no definite shape Matter: The substance or substances of which any physical object consists or is composed Volume: The quantity of three-dimensional space occupied by a liquid, solid, or gas Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What do you think would happen if you threw a block of Styrofoam™ into the water? The Styrofoam will float

review use of electronic balance. Next learn to calibrate the glassware. Than learn to use a volumetric flask. After that learn how to determine density. Finally learn how to calculate percent error. It is known that density equals mass divided by volume which is a simple formula that gives half of the desired information. The equipment that was used for this experiment was the Graduated cylinder and the Volumetric flask. Introduction The scenario is that you are a chemical engineer for the Podwitz

GS104 Lab Report Experiment # 1 Measurement, Length, Mass, Volume, Density & Time David Case: January 17, 2015 Experiment #1 Measurement, Length, Mass, Volume, Density, & Time Objectives: To make basic distance, mass, density, and time measurements. To make calculations of volume and density, using proper units, and to practice using graphing software while graphing the relationship between the circumference of a circle and its diameter. Materials: