6.03 Calorimetry Lab

Data: We found that the plastic floated in all substances. (A, B, C, and D). This meant that the density of our plastic was less than or equal to 0.91g/cm3 (because the least density of the 4 liquids was 0.91g/cm3)

Weigh a dry 25 mL graduated cylinder on the digital scale. Record the mass in Data Table 5.

The purpose of this experiment is to learn how to measure mass and volume and to determine the density of water, alcohol, and a solid. We will be using a laboratory scale or balance and the graduated cylinder to determine the density of water and of alcohol. First, place an empty graduated cylinder on a balance, determine its mass and record the value under the Density of Water: Data Table. Next, pour 25 mL of tap water into the graduated cylinder. Place the cylinder on the lab bench and read the volume of the water using the bottom of the meniscus and the volume makings on the cylinder. Then, replace the cylinder filled with water back on the balance to weigh and record the mass of both cylinder and water. Next, subtract the mass of the empty

For the first set of trials, flow and density were measured during each trial. The

Purpose: The purpose of this lab was to find the densities for water, two liquids, and two solids and compare their densities with the density of water to find their specific gravities.

The average mass from trial 2 and trial 3 was 189.6 grams, and the unknown with the molar mass closest to the average molar mass is sucrose which has a molar mass of 180.2 grams. The percent error of the mass of the unknown was 5.241%. The slope of the graph is negative because the temperature falls while sitting in the ice

The purpose of this lab is to find the densities of three common rocks found in the Earth’s crust, basalt, sandstone, and granite using the provided materials. The prediction was that granite would appear to be the most dense, followed by sandstone, and basalt would be the least dense. The mass (g) and volume (cm³) would be needed to find the density of each of the three rocks. The method, water displacement, would need to be used to find the volume of the three rocks. In this lab, a graduated cylinder would need to be filled with 130 mL of water, and then the three rock samples would need to be added. Subtracting 130 mL to the total volume of the water would give the volume of the rock, in cm³. Each of the three rocks would also need to be measured for its mass in grams using a scale. To

The __density__ is a measure of how compact or heavy an object is in a given volume (unit: mass per unit volume such as g/mL, g/cm^3 or kg/L). The density is directly related to the mass of the object (unit: usually in grams but can be in kilograms or pounds) and the weight of the object (unit: Newtons). Specific gravity can also be determined by the following formulas:

The next question is specific gravity has no units, so how do you think working with specific gravity would be different from working with density. The answer is by knowing units, you know what to plug into the formula. The last question is how could you find the density of a solid that floats in water? You find this out by taking

After my experiment I take the 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 of all 3 trials and got 40.1g (mass) and 24.0cm3 (volume). I divide 40.1g and 13.3cm3 and got 1.7g/cm3 for the density, rounded to the nearest tenth. I compare the mass and the difference was 0 (when all are rounded to the nearest tenth) which shows size doesn't really affect density.

Density is the measurement of an object that has a relative mass and is divided by a specific volume. Mass is the amount of matter an object possesses. Volume is the amount of space of an object occupies (solid, liquid or gas.) In chemistry the term density can be described as a physical and intensive property of matter. The term intensive property means, it is independent on the size and amount of a substance. Many chemist compare different types of densities of elements and substance with water. Density can be either expressed as (g/mL) for liquids, (g/cm3) for solids, and grams per liter (g/L) for gases. (Ch. 7 Notes, Dr. Binz, Lindenwood University, 2015.) The density of water is about 1.00 g/mL. If the density of an object is less

Based on the theoretical density, the density of water, methanol, and glycerol that obtained in the experiment should be the same or close to these values above. If the experiment performs correctly with high precise and accuracy, then density of the unknown can be used to identify the present chemical substance. The expect outcome for this experiment is the value you obtained will be close or exact the theoretical values.

Determine the density of a metal sample by using the density formula, Density(D)= mass(m)/ Volume(V), and the water displacement method. Determine the precent error of calculated density.

The purpose of the lab was to determine densities of materials. Density is the amount of matter in a given amount of space. Density is a physical property that is independent of the amount of material present. The formula for density is density=mass/volume(d=m/v).

b. Add Density as the header in the final column of the table. Be sure to indicate appropriate units. Calculate the density for each piece and record the value in the table.