Dow chemical

Intro In this experiment we’ll observe the organism Tetrahymena. The focus of our experiment is to observe Tetrahymena feeding rate when salt is added, we will add .0, .4, .7, and 1 mil liter solution to the organism and see its behavior. Our control group and experimental group will have the same temperature, pressure, PH level and light. The experimental group will be given salt and the control group will not have salt. We already know that the Tetrahymena eat Indian ink and form food vacuoles

NEUR 411- Assignment 3 Ana Persson Intrinsic excitability refers to the predisposition of a neuron to fire action potentials when exposed to an input signal, either pre-synaptic activity or a direct input from a sensory modality (Schulz, 2006). The intrinsic excitability of neurons is responsible for the conversion of synaptic input to the output of a given neuron. The processes leading intrinsic excitability of neurons, also known as intrinsic plasticity, is the constant change of a neuron’s intrinsic

Physiological tolerance lab was done at LaBagh woods forest preserve. we collected data at the LaBagh woods forest on a cold day. class members were divided into groups of 4 members. each group was assigned 3 trees by the professor. each group was given pieces of equipment to record trees data. as we received the equipment each group member assigned themselves what they will be doing. in my group, William measured the distance from the part of the tree 1 in a perpendicular line to the river edge

Hypothesis: The further the away the light meter the lower the intensity will be. I think this because it common sense as if you are moving the more further away from a street light the less amount of the light you can see .So this means that the further away the light meter from the light bulb of course the intensity will be lower . Equipment List • Power Pack • Light bulb • Black drain pipe • Light Meter • Paper • Tape • Scissors • Wires • Crocodile Clips Method 1. First check that

volunteered to work for his dad's Chemical business and he also got into Chemical Technology. After a while Haber decided to take on a scientific career. He soon went to work for one and a half years to work with Ludwig Knorr at Jena. After all that he ended up getting confused and started to wonder if he still wanted a career for science technology during that confusion he got offered in 1894 and a accepted an assistantship at Karlsruhe by a professor of Chemical Technology. In 1896 Haber qualified

Hypothesis: For each element, we believe that its mass and atomic number have a positive linear relationship. We can expect that as the atomic mass increases, the mass of the gas will increase as well. Discussion: Through this experiment, we were look for a relationship between a gas’ atomic mass and its mass. In doing so, we were paying very close attention to two other central ideas of chemistry: accuracy and precision. Accuracy is how close a measured value is to the actual true value, while

and safety goggles to protect your eyes. Clean safety googles before and after the lab with alcohol wipe. Wear nonlatex gloves because they’re chemical resistant. When finished with the exercise, nonlatex gloves are disposed in the trash. Eating and drinking are prohibited in the lab. Broken glass are placed in the broken glass container. Liquid chemicals and reagents are disposed in the sink and solid waste materials are disposed in the garbage can. Know where the first aid kits, fire extinguishers

The quantitative data was entered into an Excel spreadsheet, sorted by question, and the totals for each category were tabulated. Any data which fell between the categories choices was collapsed into the lesser category. When percentages were included, if the number being dropped was less than five, the number was rounded down; and if it was more than five, the number was rounded up. This was done consistently for all data points. Operational Definitions: Activities of daily living: Basic

Environmental, ethical and safety issues Substance Quantity and Physical state Hazard and Precautions Emergency Procedures Sodium Hydroxide Solution (8mol L^(-1) initially but after changing my method and some chemicals I diluted it to 1mol 〖dm〗^(-3) but then ran out so repeated the dilution of 8mol 〖dm〗^(-3)NaOH again to make another 250〖cm〗^3) 250〖cm〗^3 (plus another 250〖cm〗^3) Sodium hydroxide pellets are an odorless white solid but once dissolved in distilled water it became a liquid solution

What is the assigned reading from the Gilbert text? The assigned reading from the Gilbert text was 5.1 to 5.2 and 5.4 on VSPER (not triagonal bipyramidal or octahedral) and hybrid orbitals. 2. What is the main point of the reading? The main point of 5.1 to 5.2 and 5.4 on VSPER (not triagonal bipyramidal or octahedral) and hybrid orbitals was to understand that bond angles and shape of the molecules is due to electrons and that hybrid orbitals are formed. The electrons in the molecules repulse each