Estimating Osmolarity of Plant Cells Criteria Assessed: DCP Introduction In this experiment you will be estimating the osmolarity of potato cells by finding their change in weight in solutions of known molarity. The object is to find the molarity where the mass does not change. No net change in weight indicates that there has been no net gain or loss of water. This is a means of indirectly finding the osmolarity of the cells themselves. Apparatus 1 large potato Petri dish 7 x 250 ml beakers
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Michael Sherman Unit 3 Lab 1. What is the purpose of the address resolution protocol (ARP)? ARP translates IP addresses into physical addresses 2. What is the purpose of the dynamic host control protocol (DHCP)? DHCP eliminates the need to assign static IP addresses by allowing a server to assign addresses to devices as they connect to the network. 3. What is the purpose of the dynamic name service protocol (DNS)? DNS converts common domain names into IP addresses to route data to the correct
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This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Observations When using 1.0 g of CaCl2·2H2O‚ stoichiometric calculations should give the following results: 1
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Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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Name: Lab Partners: Experiment Date: 02/09/2013 Due Date: 02/23/2013 Lab Exercise No. 2 Determination of Kc Values Using UV Absorption Objectives * To determine the equilibrium constant for a given reaction * To understand the concept of Le Chatelier’s Principle * To gain experience in the use of a UV Spectrophotometer Background/Concepts * A chemical equilibrium is the state reached by a reaction mixture when the forward reaction and the reverse reaction
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Lab 3 1. The IIS7 web page appears. 2. The IIS7 web page appears. 3. The default web page for is set to be the IIS7 oage. 4. The detailed error 403.6 Forbidden is displayed. 5. The basic error 403.6 forbidden is displayed. 6. The IIS7 web page is displayed. 7. The error page remains. 8. This is because there is no DNS setup to establish the link between the local address and the address name. Computer Name IP Address Server05B 172.16.5.2 9. The IIS7 web page is displayed. 10. It will not connect
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Lab Questions: Lab #4 * Why are the chloroplasts traveling along the outer perimeter of the Elodea cell? The chloroplast are traveling along the outer perimeter to help move the vital nutrients thought the cells and convert them to substances used in the cell of the elodea cell. * What is the typical size difference between animal cells and bacterial cells? One of the main difference between an animal cell and a bacterial cell is a bacterial cell contains a plasmid‚ a ring of DNA‚ opposed
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Temperature (°C) Convert to: g NH4Cl 100 mL H2O 1 2g 5.0 44°C 40g NH4Cl 2 2.2g 5.0 50°C 44g NH4Cl 3 2.4g 5.0 57°C 48g NH4Cl 4 2.6g 5.0 61°C 52g NH4Cl 5 2.8g 5.0 66°C 56g NH4Cl Data Table 2: Experiment Results Solubility of NH4Cl (g/100 mL H20) Crystallization Temperature (°C) 40g NH4Cl 44°C 44g NH4Cl 50°C 48g NH4Cl 57°C 52g NH4Cl 61°C 56g NH4Cl 66°C Data Table 3: Solubility Results Compound Mixture Soluble or Insoluble? Distilled H2O + Na2SO4 soluble Corn Oil + Na2SO4
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Almost all plants have roots that grow into the soil to help support its life. Roots are used by the plants to take nutrients and water out of the soil and send it through the plant. They also stabilize the plant. The root is made up multiple parts starting at the bottom with the root cap‚ then the zone of cell division next is the zone of cell elongation‚ and at the top of the root is the zone of differentiation. To figure out what section of the root has the highest number of cells in mitosis we
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dollars is: Fixed Costs = 96000/0.6 = $160‚000 Contribution Margin Ratio 2. Calculate the number of units Northenscold’s must sell each year to break even. FC/CM 96000/12 =8000units 3. Calculate the number of units Northenscold’s must sell to yield a profit of $144‚000. (FC+ Profits)/CM = 96000+144000/12 = 20000 units 2. Berhannan’s Cellular sells phones for $100. The unit variable cost per phone is $50 plus a selling commission
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