texture and feel of our soil. Materials and Methods First me and my group of two other classmates collected 50 grams of soil. To make sure it was exactly 50 grams the soil was weighed on a digital scale inside a small container the empty container was weighed first and then our soil was added into. To find the final soil’s mass the to measurement of container was subtracted the final mass. We then placed the soil into a stirring cup given to us by
Premium Soil Sand Silt
Physiology‚ Berry HOMEOSTASIS LAB ACTIVITY Introduction: Homeostasis means maintaining a relatively constant state of the body’s internal environment. The term used to describe a pattern of response to restore the body to normal stable level is termed negative feedback. When a stimulus (environment change) is met by a response that reverses (negates) the trend of the stimulus‚ it is negative feedback. As a result the internal environment is returned to normal. Pulse rate is constantly checked
Free Heart rate Physiology
Acid/Base Titrations Pre- Lab Questions 1. Using your textbook or a handbook‚ look up the formula and structure of potassium hydrogen phthalate (KHP) used to standardize the solution of NaOH in this experiment. Calculate the Molar Mass of KHP. Molar Mass= 204.22 g/mol Formula: KC8H5O4 2. Using your textbook or chemical dictionary‚ write the definition of indicator. Indicator- a substance added at the beginning of the titration that changes color at (or very near) the equivalence
Premium Sodium hydroxide Titration Acid
concentrated intestinal gas through the anus and out to the environment where there is a low concentration. By releasing that harmful gas‚ it can keep your body healthy. Agar is a phycocolloid and is extracted from several species of red-purple marine algae’s cell walls that are usually harvested in eastern Asia and California. Laboratory agar looks gelatinous because it is dissolved in boiling water and cooled. Agar can be easily distinguished from the other materials commonly found in a laboratory due to
Premium PH Molecular diffusion Measurement
Chemistry Lab Report Water Hydration Introduction: A hydrated crystal or hydrated occurs when water becomes tightly attracted to a metal salt base on it’s polarity. The water molecules maintain integrity as molecules‚ however they are considered to be part of the formula of the hydrate. When the hydrate metal salt crystal is heated‚ the attractions to the water are broken by the heat energy and the water escape from the crystal. After heating the salt crystal is called as anhydrous‚ which
Premium Water Salt Sodium
Cooper Synthesis of Aspirin (Acetylsalicylic Acid) Abstract:- Aspirin (acetylsalicylic acid) is produced experimentally in the lab. The resulting percentage yield is 65.5%. The purity of the obtained product is tested using the melting point and Ferric Chloride Test (FCT). The aspirin was massed‚ and the melting point was determined. Based on the data collected‚ there was a total yield of 1.757g of purified aspirin‚ which had a melting point range of 125°C-130°C. Results of the Ferric Chloride test
Premium Acetic acid Aspirin Carboxylic acid
Multimedia Graphic Bell Labs: A Hive of Invention But we idealize America’s present culture of innovation too much. In fact‚ our trailblazing digital firms may not be the hothouse environments for creativity we might think. I find myself arriving at these doubts after spending five years looking at the innovative process at Bell Labs‚ the onetime research and development organization of the country’s formerly monopolistic telephone company‚ AT&T. Why study Bell Labs? It offers a number of lessons
Premium Innovation
growth of civilization since the beginning of time‚ but can an invention actually do more harm than good? Who is at fault? Should those who came up with the ideas be to blame? In answer to the first question‚ yes. Take gunpowder as an example; gunpowder was first used in China for entertainment‚ such as fireworks (Pyro universe‚ History of fireworks). However‚ when the invention went into the wrong hands‚ it became a weapon‚ which made it do more harm than good. It is not those who came up with the idea
Premium Global warming Pollution Oxygen
Abstract The purpose of this lab was to test if ethanol affects the reaction involving hydrogen peroxide and catalase. Tests were performed by putting chicken liver‚ ethanol solution (diluted ethanol solution for other trials) and hydrogen peroxide in a test tube with a side arm‚ and having a rubber tube lead the oxygen gas into a gas collection tube. Results from the tests showed a negative correlation‚ this means that the more diluted the solution of 95% ethanol was‚ the less oxygen gas collected
Premium Oxygen Hydrogen peroxide Enzyme
slows energy reactions‚ and impairs muscle contraction. The burn up we feel in intense exercise is the cause of hydrogen ion. During this experiment(Muscle fatigue lab) it will be seen that after a while of squeezing a small ball there won’t be the same amount of energy that was started with first and you will feel a burn in your arms which makes you feel hurt and don’t do a lot of squeezing; which is called the hydrogen ion in muscles. The amount of time given is the independent‚ the number of
Premium Acid Muscle Hydrogen