Sodium Chloride and Ml Density
Objective: The purpose of experiment of density determination is to determine the densities of regularly shaped object and irregular shaped solids as well liquids. Density equal mass over volume.
Materials Used: Materials used in this experiment was a regular shaped object and irregular shaped object and a ruler to take the measurements of the object. A graduated cylinder and electric beam balance were used to measure the volumes and masses of the object. As well 5-20% concentrated were used as well.
Summary of Procedures: There are three sections of this experiment for section A, a regularly shaped object was obtained and the volume and mass was calculated to find the density of the regularly shaped object. In the second part of section A, sample of metal pellets were obtain and asked to find the density of the pallets. The metal pellets were weighed to calculate the mass. Using the graduated cylinder, 50mL were approximately added to the graduated cylinder. The pellets were then added into the graduated cylinder and to get the volume of the pellets by subtracting the volume of the water and the pellets by the volume of just the water itself. For the 2nd part of this experiment part B a 25 mL cylinder was used the empty cylinder was weighed on the electronic beam balance then 23.0 mL’s of distilled water was added and weighed again to calculate the mass of the water as well as the density was calculated. The same process was performed to calculate the density of an unknown substance. The third part Section C 5-25% of sodium chloride was prepared by the instructor. For each percent concentration of sodium chloride a 25 mL was prepared. Weighing the graduated cylinder before and after the sodium chloride was transferred the density were calculation.
Pre- Laboratory Questions:
1. A metal sphere weighing 15.45 g is added to 21.27 mL of water in a graduated cylinder. The water level rises to 24.78 mL. Calculate the density of the metal.
Then
Materials Used: Materials used in this experiment was a regular shaped object and irregular shaped object and a ruler to take the measurements of the object. A graduated cylinder and electric beam balance were used to measure the volumes and masses of the object. As well 5-20% concentrated were used as well.
Summary of Procedures: There are three sections of this experiment for section A, a regularly shaped object was obtained and the volume and mass was calculated to find the density of the regularly shaped object. In the second part of section A, sample of metal pellets were obtain and asked to find the density of the pallets. The metal pellets were weighed to calculate the mass. Using the graduated cylinder, 50mL were approximately added to the graduated cylinder. The pellets were then added into the graduated cylinder and to get the volume of the pellets by subtracting the volume of the water and the pellets by the volume of just the water itself. For the 2nd part of this experiment part B a 25 mL cylinder was used the empty cylinder was weighed on the electronic beam balance then 23.0 mL’s of distilled water was added and weighed again to calculate the mass of the water as well as the density was calculated. The same process was performed to calculate the density of an unknown substance. The third part Section C 5-25% of sodium chloride was prepared by the instructor. For each percent concentration of sodium chloride a 25 mL was prepared. Weighing the graduated cylinder before and after the sodium chloride was transferred the density were calculation.
Pre- Laboratory Questions:
1. A metal sphere weighing 15.45 g is added to 21.27 mL of water in a graduated cylinder. The water level rises to 24.78 mL. Calculate the density of the metal.
Then