Photosynthesis Lab Report

The procedure for Lab 5 contained four parts. For Part A, a clean, dry 100 mL beaker was obtained and filled with 60 mL of distilled water. Next, the beaker was placed on a ring stand with a thermometer attached to the ring stand to record the temperature of the water. After the thermometer had been in the water for two minutes, the temperature was recorded. Following the recording of the temperature, a 10 mL pipet and a bulb was used to pipet 10.00 mL of distilled water into a clean, dry, pre-weighted 50 mL beaker. The mass of the water was recorded. Next, the volume of the water dispensed was calculated using the given table. Steps three to five were repeated two times. Each time the measurements were recorded, making sure the beaker was dried before dispensing new water into it. …show more content…
The mass was recorded to the nearest .001 g. The Fluorescein powder was added directly to a 100 mL volumetric flask by folding the weighing paper and sliding the content into the the mouth of the flask. Next, distilled water was used to rinse the weighing paper into the flask. Following this step, the flask continued to be filled with distilled water until reaching the mark. The flask was then capped with parafilm and mixed thoroughly. This new mixture was named Master Solution. Next, the pipet was rinsed three times with small amounts of the master solution. The pipet was then used to pipet 10.00 mL of the master solution into a clean, dry 250 mL Erlenmeyer flask. This step was repeated until three flasks were filled with 10 mL of the master solution each. Following the filling of the flasks, the pipet was rinsed three times with distilled water and three times with small amounts of hydrochloric acid. Lastly, the pipet was used to insert 10.00 mL of hydrochloric acid into each of the three flasks. The three flasks were mixed thoroughly. Note the formation of a yellowish