MollyMichaelOmarBethany

Method Section of Lab #16 Determining the Identity of an Unknown Hydrate Using Percent Composition Water

In producing this lab experiment, the weight of an empty cool crucible was first measured which resulted in 23.9 grams. Second, a small amount of hydrate 3 was added into the cool crucible. The outcome of the weighted crucible and unknown hydrate 3 resulted in 24.9 grams. The observation of Hydrate 3 consisted of the substance being pink, powdery, light, solid, and oderless. For the second Unknown hydrate, the mass of the a diferent cool crucible was weighted resulting in 22.6 grams. The Observation of Unknown hydrate 1, consisted of the substance being blue, containing crystals, having a sandy texture, solid, and oderless. The same procedure was followed for Unknown Hydrate 1, in which the resulted weight of the unknown hydrate along with the cool crucible was 24.6 grams. To recieve the calculated mass of the unknown hydrate, the mass of the cool crucible had to be subtracted from the total mass of the cool crucible and the unknown hydrate. The outcome of this calculation, came to be 1.00 grams for Unknown Hydrate 3 and a 0.8 for Unknown Hydrate 1. After all of these calculations were made, the cool crucible with the unknown hydrate 3 and 1 were placed over a burner on a crucible plate for about five minutes. After the cruible was heated and cooled, the mass of the cooled crucible and anhydrate needed to be determined. The weighted outcome of the mass of the cooled crucible and anhydrate was 24.6 for Unknown Hydrate 3 and 23.1 for Unknown Hyrdate 1. In order to complete the calculated mass of the anhydrate for both Unknown solutions, the mass of the cool crucible was to be subtracted from the total mass of the cooled cucible and anhydrate. This resulted in 0.7 grams for Unknown Hydrate 3 and 0.5 grams for Unknown Hydrate 1. To understand the calculated mass of water lost, the total mass of cool crucible and hydrate was to be subtracted from the total mass of the cooled crucible and anhydrate. For the Unknown hydrate 3, the mass of water lost was 0.3 grams and for the Unknown hydrate 1 the mass of water lost was also 0.3 grams. The Calculated perecnt mass of water in a hydrate for Unknown Hydrate 3 was 30% and for Unknown Hydrate 1 was 37.5%.

Omar Santos: The cellular Respiration is where the cells in a person body's are gaining energy. In other words another name for this is ATP. "There are 3 complexes of integral membrane proteins." There are the **NADH dehydrogenase** complex (I). the **cytochrome c reductase** complex (III). the **cytochrome c oxidase** complex (IV) and what they do is transfer electrons from NADH to form oxygens molecules. For example " oxidizing food molecules, like glucose, to carbon dioxide and water."