weigh less due to osmosis. Our null hypothesis was: If the pH level of a solution is either acidic or basic‚ then it will have no effect on the weight. The independent variable was the different solutions of different pH values. The dependent variable was the weight of the potato‚ which was measured in grams. The baseline of this experiment is the weight of the potato when in the milk solution because milk has a neutral pH. The controls in this experiment are that each sample had
Premium Chemistry Concentration Osmosis
XYZ IB SL Math Circles Aim: The aim of this task is to investigate positions of points in intersecting circles. Introduction: The above diagram shows that distance r is the distance between any point‚ such as A‚ and the center of the circle‚ O‚ of the circle C1. The circle C2 has centre P and radius OP. A is one of the points of intersection of C1 and C2. Circle C3 has centre A‚ and radius r. The point P’ is the intersection of C3 with (OP). The r=1‚ OP=2‚ and P’=0.5. This is shown
Premium Circle Length Distance
The purpose of the lab was to investigate osmosis‚ which was successfully achieved because there was a change in the potato’s mass which was due to the net movement of water either into the potato cells or out of the potato cells. In the 0.400M solution‚ the potato decreased in mass‚ this was due to the reason that the solution was hypertonic. There was a higher concentration of solute and lower concentration of water in the solution than there was in the potato cells. This led the water to travel
Premium Concentration Diffusion Solution
In this experiment‚ we had to demonstrate the process of osmosis using potatoes‚ and to determine the concentration of the cytoplasm of the potato. To demonstrate this‚ we had 6 test tubes and poured in different sucrose solutions of the following concentrations: 0.0M‚ 0.1M‚ 0.2M‚ 0.5M‚ and 1.0M. Once added in with all the sucrose solutions‚ we added in the 6 cylindrical potatoes of equal diameter and length. Before and after putting it in the potatoes‚ we had to weigh the initial and the final mass
Premium Concentration Osmosis
activities and honors and credentials of the graduates. This report also discusses the factors affecting the employability of IA graduates and explores the relevance of the skills gained in the course of studies. The dif¬ferences of employment experiences‚ internship‚ gender and age groups were highlighted throughout the report. In the end it elicits recommendations on how IA graduates can raise their profiles internationally and enhance their employability. The findings of the study will be useful
Premium Internal audit Employment Auditing
IB Economics: Practice Internal Assessment The article “Chinese Dragon bites Local manufacture as Importers laughs last” stated that the imported products‚ majorly from China have became a threat to the local economy in Uganda. The Ugandan government have taken measure ease production on local traders by scrapping the pre-inspection fees and planning to construct industrial parks to lower the hiking cost of production of local products. Chinese products are cheaper and more competitive comparing
Premium Supply and demand Public transport
transport of materials in three semi-permeable membranes: dialysis tubing‚ eggs‚ and onion cells. Background Information 1. Diffusion is the movement of solutes from high to low concentration. Osmosis is the movement of water from low to high concentration. Both refer to movement in/out of a cell‚ but osmosis refers specifically to water. 2. Isotonic‚ hypertonic‚ and hypotonic all refer to the comparison of concentrations of solutes in verses out of the cell. Isotonic is when the concentration in
Premium Cell membrane Concentration Ethanol
IB Math Studies Internal Assessment: What is the Relationship between SAT Scores and Family Income of the Test Takers around the World? Exam Session: May 2015 School name: Jim Hill High School Teacher: Ms. Davis Date: December 15‚ 2015 Course: IB Math Studies Word Count: 1‚597 Name: Jasmine A. Wells Introduction The SAT examination is mostly in today’s world of academics‚ a requirement of getting accepted into collage. Not only is it enough to take the examination but the
Premium SAT Null hypothesis Education in the United States
Osmosis Lab: Potatoes and Elodea Background Information: Cells have a need to regulate their internal environment. They need to be able to this because cells often find themselves in environments where the concentration of dissolved solids outside the cell is different from the number of dissolved solids inside the cell. Since the solids can not move across the membrane‚ the cell responds by moving water either into or out of the cell in an attempt to balance the number dissolved particles.
Premium Concentration Bacteria
Bio Review: Unit 1 Diversity of Living Things Diversity- all the different kinds of life on Earth Species Diversity- variety of species‚ abundance of the species in a given area Genetic Diversity- variation of genes within a species Ecosystem Diversity- diverse range of habitats‚ various organisms within habitats & relationships between them Prokaryotes Eukaryote Appearance Size - Always smaller - 1000x larger DNA structure - Plasmid (one strand circular DNA) - Dna in nucleoid
Premium DNA Blood Allele