Chemlab Week 1
Name: Marquetta Turner
Lab, Week #1
BALANCE LAB
Introduction: Using the direct weighing and weighing by difference methods to find weight and mass of chemicals.
The purpose of this lab was to be familiar with the different balances and methods used to find the weight and mass of chemicals. In the lab it used different types of balances and direct weighing and weighing by difference methods.
In the lab we used the centigram balance, the mass in grams and slugs to determine both weighing and weighing by difference. Also using an electronic balance the weigh of a slug will determine by using direct weighing and weighing by difference as well. Plus the mass of two unknown weights will be determined using a electronic balance with the same weighing techniques.
When using the copper slug the mass was determine accurately by both direct weighing and by weighing by difference. But when using the electronic balance the mass was more accurate and the electronic balance can determine mass to three decimal places while centigram balance can only determine mass to two decimal places.
Procedure
The slug was used by measuring of different methods, the slugs was placed in a 100ml beaker and weighed then the slug was removed and the beaker was weighed. The measurement of the beaker and slug was recorded, and then the beaker alone was weighed and subtracted from the first measurement giving the weight of the slug by difference. Both results were giving from using first centigram balance and second electronic balance. Both methods of direct weighing and difference by weighing were used when finding the weight of the unknown object. It was done by placing the unknown slug into the beaker and weighing both the slug and the beaker, then removing the slug and weighing the beaker alone. The beaker weight was subtracted from the combined weight measurement in the weight of the unknown slug by difference. The slug was weighed by different method and placed directly on
Lab, Week #1
BALANCE LAB
Introduction: Using the direct weighing and weighing by difference methods to find weight and mass of chemicals.
The purpose of this lab was to be familiar with the different balances and methods used to find the weight and mass of chemicals. In the lab it used different types of balances and direct weighing and weighing by difference methods.
In the lab we used the centigram balance, the mass in grams and slugs to determine both weighing and weighing by difference. Also using an electronic balance the weigh of a slug will determine by using direct weighing and weighing by difference as well. Plus the mass of two unknown weights will be determined using a electronic balance with the same weighing techniques.
When using the copper slug the mass was determine accurately by both direct weighing and by weighing by difference. But when using the electronic balance the mass was more accurate and the electronic balance can determine mass to three decimal places while centigram balance can only determine mass to two decimal places.
Procedure
The slug was used by measuring of different methods, the slugs was placed in a 100ml beaker and weighed then the slug was removed and the beaker was weighed. The measurement of the beaker and slug was recorded, and then the beaker alone was weighed and subtracted from the first measurement giving the weight of the slug by difference. Both results were giving from using first centigram balance and second electronic balance. Both methods of direct weighing and difference by weighing were used when finding the weight of the unknown object. It was done by placing the unknown slug into the beaker and weighing both the slug and the beaker, then removing the slug and weighing the beaker alone. The beaker weight was subtracted from the combined weight measurement in the weight of the unknown slug by difference. The slug was weighed by different method and placed directly on