consumption of CO2. All the oxygen within the leaf disks will be removed before being placed into either of the solutions. III. Question & Hypothesis 1. What solution will allow the leaf disks to undergo Photosynthesis first? 2. If the cup with bicarbonate solution allows the leaf disk to produce oxygen by the process of photosynthesis then the leaf disk in the bicarbonate solution will be the first to float within the 15 minutes allowed. IV. Methods‚ Constants‚ Controls‚ & Trials
Free Photosynthesis Carbon dioxide Leaf
potato disks after they have been incubated in any sucrose solution. This means that the concentration of sucrose that the potatoes are in will no effect the movement of water in or out of the potato cells. However‚ the alternative hypothesis states that the mass of the potato disks will increase after they have been incubated in a hypertonic solution. The mass of the potato disks will decrease after they have been incubated in a hypertonic solution. After the results have been gathered‚ appropriate estimations
Premium Null hypothesis Tuber Potato
region of high concentration (of water molecules) to a region of lower concentration (of water molecules). We define 3 types of solutions based upon osmotic activity. In an isotonic solution‚ the solute concentration is the same on both sides of the membrane so there is no net movement of water. ( See Figure 1) In a hypotonic solution‚ solute concentration is higher inside the cell than outside. So water moves from a high concentration outside the cell to a lower concentration
Premium Water Osmosis Concentration
Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic) than the intracellular environment
Premium Concentration Osmosis Potato
Experiment 1: Mixtures Aim: To develop an understanding of different types of mixtures including solutions and examine the different solubilities of some solutes and two solvents: water and ethanol Equipment Bunsen burner Tripod Gauze mat Beakers (2 x 100mL) Boiling chips Distilled water Sodium chloride Sodium chloride (solid) Glass rod Measuring cylinder (25mL) Ethanol Watch glass Thermometer 100% Orange Juice 100% Apple Juice 100% Prune Juice Solder Fruit Scone Charcoal Copper(II) Chloride Magnifying
Premium Solubility Solvent Solution
(p-tert-butylphenol)‚ and a neutral compound (acetanilide). Extraction is the process of selectively dissolving one or more of the compounds of a mixture into an appropriate solvent‚ the solution that contains these dissolved compounds is called an extract (Manion‚ 2004). Impurities that are present in the solution can be removed by extracting them from the original solvent into another solvent. This is done by mixing two immiscible (insoluble to one another) solvents (Manion‚ 2004). By mixing
Premium Chemistry Solubility Solvent
consists of two steps: (1) thoroughly mixing the solution with saturated aqueous sodium chloride (saturated salt solution) and discarding the aqueous layer (this is a preliminary drying step that removes most of the water) and (2)‚ adding a solid inorganic drying agent (this strongly binds to the remaining traces of water dissolved in the organic solvent)‚ allowing it to remain in contact with the solution for several minutes‚ then separating the solution from the solid drying agent. The solvent can
Premium Solvent Solubility Water
current through a salt solution and measuring the resultant amperage‚ a pattern in the recordings will help find a soil sample’s salinity level. Variables Controlled Amount of solution (100 mL)‚ supplied voltage (4V)‚ amount of soil (50 gm) & water (150 mL) in soil sample’s solution. Independent Amps recorded by ammeter. Uncontrollable Impurities dissolved into water. Materials Power pack; copper electrodes; ammeter; 8 different concentrations of salt solution (NaCl) 0.1‚ 0.5‚ 1‚
Premium Sodium chloride Water Concentration
Spring Practice Final 2011 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature‚ what is the pressure at which the volume of the gas is 2.0 L? a. | 0.5 atm | c. | 0.20 atm | b. | 5.0 atm | d. | 800 atm | ____ 2. The pressure of a sample of helium is 2.0 atm in a 200-mL container. If the container is compressed to 10 mL without changing
Premium Concentration Gas Chemistry
Chemistry 121 Experiment 19 Molar Mass Determination y Depression of the Freezing Point Introduction: The most commonly used liquid is water. In this experiment we study the equilibria that can exist between pure water and an aqueous solution‚ and ice‚ the solid form of water. The heat will transfer from a higher temperature to a lower temperature. In order for water to change states of matter‚ it takes a certain amount of kinetic energy or heat. The shift from ice to water (solid to a liquid)
Premium Water Freezing-point depression Concentration