Potatoes Lab #1 Purpose: To find the molarity/concentration of potato cytoplasm. Materials: As on page 1 in the lab handout. Procedure: As on page 1 in the lab handout. Data and Observations: Test Tube # | Concentration of sucrose solution (mol/L) | Initial Mass (g) | Final Mass | Percentage change in mass | 1 | 1.0 mol/L | 3.00g | 2.25g | -25.0% | 2 | 0.9 mol/L | 2.70g | 2.07g | -23.3% | 3 | 0.8 mol/L | 2.92g | 2.25g | -22.9% | 4 | 0.7 mol/L | 2.60g | 1.94g | -25.4% | 5 | 0.6
Premium Concentration Osmosis Chemistry
of Oxalate Ion in Ferric Oxalate Trihydrate using Titrimetry Abstract: In this two-part lab‚ we will learn about coordination compounds and their uses with stoiciometry. We will also find out about how theoretical yield is calculated from a reaction we will create. We will also synthesize Potassium Ferric Oxalate Trihydrate (K_3 [〖Fe(C_2 O_4)〗_3]•3H_2 O) using a two step reaction. In the second part of this lab we will calculate how much Oxalate Ion is present in the K_3 [〖Fe(C_2 O_4)〗_3]•3H_2 O using
Premium Iron Hydrogen Nitrogen
CHAPTER 5: MANAGEMENT FUNCTIONS (M) 1. Which one of the following is not one of the three steps of controlling? A. Monitoring B. Evaluating * C. Authorizing D. Correcting (E) 2. According to Douglas McGregor‚ team members that require supervision‚ direction and threat of punishment for non-compliance are called _____ employees. * A. Theory X B. Theory Y C. Theory Z D. Non-compliant (E) 3. William Ouchi’s approach that managers in Japanese companies have a better relationship
Premium Project management Maslow's hierarchy of needs Theory X and theory Y
EC 12/19‚ 2010 Forensics Period 5 Lab: Make your own Dental Impression I. Objective: The objective of the lab “Look and Record” was to identify the castings of your own teeth. The lab was also used to see how important forensic odontoloogy really is. What can a forensic odonotologist see in a dental impression cast that can help identify an individual? II. Background: Forensic odontology is important in all cases. Impressions can determine many things in a case.
Premium Dentistry Teeth
01.07 Accuracy and Precision: Balance Lab Worksheet Calculations Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation. 1. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) Trial 1 36 - 25.5 = 10.5 Trial 2 36.5 - 25.5 = 11 Trial 3 36.9 - 25.5 = 11.4 2. Calculate the
Premium Accuracy and precision Density Volume
Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame: Barium-green Calcium-red Sodium-yellow Rubidium-purple Potassium-blue Lithium-pink 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.: Unknown 1-yellow. I think it is Sodium because
Premium Light Atom Color
Severn Cullis-Suzuki gave the speech at the UN Earth Summit of 1992‚ when she was only 12 years old. E.C.O raised money with members of ECO‚ to attend the Summit in Rio de Janeiro. Severn Cullis-Suzuki personally wrote the entire speech (below) Hello‚ I’m Severn Suzuki speaking for E.C.O. - The Environmental Childrens Organisation. We are a group of twelve and thirteen-year-olds trying to make a difference: Vanessa Suttie‚ Morgan Geisler‚ Michelle Quigg and me. We raised all the money ourselves
Premium Severn Cullis-Suzuki
historic piece of legislation that permits Indian tribes to withdraw funds held in their account for the purpose of managing those funds themselves. However as soon as money is taken out from these accounts the U.S is no longer responsible for it. 5. Section 465- authorizes the Secretary to purchase fee land with federal funds‚ convert land into trust status‚ nd assign it to an Indian tribe. Meaning they can aquire additional trust land. 6. Public Land 280- main intent was to eliminate lawlessness
Premium Federal government of the United States Native Americans in the United States United States
Unit 5-The principles underpinning the role of the Practitioner working with Children E1 As a childcare worker it is important to develop professional relationships with children‚ families‚ colleagues and other professionals. One way I can develop a professional relationship with parents is to always be approachable‚ to listen to what they say‚ be honest with them and always keep them up to date with any changes. This gives them confidence to speak to me about any concerns they have. With
Premium Children Act 1989 Nursery school Reflective practice
the fix shaft between the gates. 2. Place a short strip of timer tape in the recording timer over the paper disc. 3. Make sure the tape is threaded through the gates and is free of snags. 4. Turn the timer on and pull the strip through the gates. 5. Make sure you are getting dots on the underside of the tape. 6. Use the test tape to decide on the best speed to pull the tape‚ so that the dots are easy to read. 7. Place a +1.5 meter piece of tape in the timer. 8. Pull the tape through a gentle
Premium Time Frequency Error