1.0 Introduction 1.1 Aim and Assumptions: The aim of this experiment is to observe the rate of diffusion of diethyl ether vapour into stagnant air‚ and then determine the diffusivity. An error analysis of this calculation also had to be carried out. The following assumptions made were: * Diethyl Ether is an ideal gas * Partial pressure at the top of the tube was equal to zero * Mass transfer resistance between the liquid surface at the bottom of the tube is insufficient‚ compared with the
Premium Diffusion Molecular diffusion Thermodynamics
Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
Premium Diffusion Molecular diffusion Chemistry
results. My hypothesis was ‘as the surface-area-to-volume ratio decreases the diffusion rate increases’ my results support my hypothesis‚ because in my table of results when the surface area to volume ratio is at 14 the diffusion time is 38 seconds‚ then the ratio goes down to 9‚ and the time increases to 90 seconds. My graph also supports my hypothesis‚ because the curve on my graph slopes down which shows as the diffusion time increases the ratio decreases. One of my results that could possibly have
Premium
Different Molar Mass on the Diffusion on Substances Lunar-maius A. Gaerlan Group 2 Sec. X – 9l August 15‚ 2012 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue‚ having the largest
Premium Chemical reaction Chemistry Temperature
Cell Size: Is Bigger Better? Problem: Why are cells small? Objective: To see the relationship between cell size and diffusion of materials. Hypothesis: If we cut three different sizes of cells‚ then the smallest one will survive the longest due to its sufficient permeable membrane. Cube | Total Volume (cm^3) | Surface Area (cm^2) | Index SA/VOL | 3 | 27 | 54 | .5 | 2 | 8 | 24 | .33 | 1 | 1 | 6 | .16 | Index of Cubes Cube Index SA/VOL Surface Area to Volume Cube | Total
Premium Area Organelle DNA
150L: Introduction to Biology I Instructor: Dr. Bethany Bowling Osmosis and Diffusion Report Estimating the Osmolarity of Plant Cells--Potato YAO ZHANG 03/26/2012 Introduction: It is undeniable that all cells have the kinetic energy. It will led the cells move randomly around to others. For this molecular movement‚ there are two results that might happen. Diffusion is one of them. Diffusion is the movement of molecules that between the high concentration and the low concentration
Premium Osmosis Concentration
Peanut Butter and Jelly Mmmm‚ peanut butter and jelly. Just the very mention of these familiar words gets our mouth watering‚ ready for one of the all time great sandwiches. A report conducted in 2002 stated that by the time a typical child graduates from high school‚ they would have consumed over 1500 peanut butter and jelly sandwiches. One of the simplest sandwiches to make‚ it is a favorite of both parents and children. It is quick to prepare‚ and kids will happily eat them. We
Premium Nutrition Food Fast food
Diffusion of Buddhism and Christianity Siddhartha Gautama‚ better known simply as Buddha‚ first followed the Hindu religion but then later realized that the cast system from Hindu was immoral and decided to leave his earthly possessions to find what he believed to be nirvana‚ which resulted in the creation of Buddhism. Christianity originated from the teachings of Jesus Christ‚ who created a religion that came from Judaism which attracted all women and minorities and was later spread mainly by
Premium Buddhism Islam Asia
denotes the importance of integrating the compatibility construct within technology acceptance models as well as its confounding results in doing so. Rogers (1962) was the first one to introduce and define the term compatibility in his Innovation Diffusion Theory. “Compatibility assesses the extent of congruence between a new technology and various aspects of the individual and the situation in which the technology will be utilized” (Karahanna et al.‚ 2006‚ p. 782). Diverse studies identified a
Premium Diffusion of innovations
THE EFFECT OF THE WATER CONCENTRATION GRADIENT ON THE RATE OF OSMOSIS Investigation Folio: Summative Stage 1 Biology: SEMESTER 1 2014 MARCIA SHAW - 151003X INTRODUCTION Diffusion: is when something spreads more widely from a higher concentration gradient to a lower concentration gradient. Diffusion is the process from which molecules‚ atoms or ions mingle together and move from an area of high concentration to an area of low concentration as a result to their kinetic energy. for example
Premium Osmosis Diffusion Chemistry