Density Lab

Experiment 1: Density |

Purpose: To determine the density of the following liquids and solids.
Data/Observation: Part A Sample | Distilled Water (g) | Methanol (g) | Glycerol (g) | Mass of empty cylinder | 41.1 g | 40.4 g | 41.1 g | Mass of cylinder + liquid | 51.2 g | 48.2 g | 53.8 g | Mass of liquid | 10.1 g | 7.8 g | 12.7 g |

Calculations:
Density of liquid = Mass/Volume = g/mL

Distilled Water = 10.1g/10mL = 1.01 g/mL
Methanol = 7.8g/10mL = 0.793 g/mL Glycerol = 12.7g/10mL = 1.27g/mL Data Observation: Part B Sample | Sucrose | Sodium Acetate | Naphthalene | Mass of solid (g) | 5g | 2g | 2g | Volume of water (50mL) | 50mL | 50mL | 50mL | Volume of water & solid (mL) | 53mL | 52mL |
After the masses were taken, the densities of each liquid were calculated. Results showed: * Distilled water – 1.01 g/mL * Methanol – 0.793 g/mL * Glycerol – 1.27
The same procedure was done for solids. We calculated the densities of 5g of sucrose, 2g of sodium acetate and 2g of naphthalene. The results showed * Sucrose – 1.6 g/cm3 * Sodium acetate – 1g/cm3 * Naphthalene – 1g/cm3
Sucrose came out to be the densest out of the solids and sodium acetate and naphthalene’s densities were both 1g/cm3.
Some factors that may have altered the outcome would be human and instrumental error. Human error could be caused by things like misreading the graduated cylinder when measuring out liquids. Instrumental error could have occurred when weighing solids. Residue of other solids may have already been on the weight paper or scale which may have added to the measurement.

CONCLUSION:
It was concluded that the densities of the following liquids and solids were determined.

Questions & Answers: 1. Salad oil rises to the top of the vinegar in salad dressing because the salad oil is less dense than the vinegar. When two liquids or materials of different densities are put together; the densities control how each liquid or material order themselves in a