Potassium hydroxide

Will glucose, water, or both pass through the walls of a raisin? If you soak a raisin in water, then only the water will pass through the membrane. Based on diagrams that I have been given, glucose molecules are too large to easily pass through the membrane of a raisin. Water molecules can also pass through a membrane much more easily than glucose molecules can. The materials used for this lab are as follows: a. a clean 250 ml beaker b. 200ml of distilled water c. glucose test strips d. five raisins

#include #include #include using namespace std; int main() { double beginningodometer[100], endingodometer[100], milestravelled = 0, gallons[100], totalgallons = 0, ppg[2], totalppg = 0, avgppg = 0, avgmpg = 0, costpmile = 0; //totaloodometer, averageodometer, gallons, ppg, totalPPG, countPPG, averagePPG, mpd; int i = 1, j; //i is the counter cout << "\nEnter the beginning odometer reading> "; cin >> beginningodometer[i]; if (beginningodometer[i] >= 0) { cout << "\nEnter the ending

Today, in the real world, titration is used in the medical field to find the concentration of blood and urine. It is also used to find a certain amount of a chemical in a food. A titration is a way to the concentration of an unknown solution by using a solution with a known concentration. The unknown solution is called an "analyte", while the known solution is called the "Titrant". The glassware used in order to preform titrations is a buret or "burette". A burette is a glass cylinder with a tap

An aliquot (5 mL or 500 ml) of sample was filtered through a Whatman Anotop PTFE syringe filter (0.2 µm) and the concentrations of target PHCs were quantified using HPLC-MS/MS. Question: Why not preconcentration such as passing 200 ml through a cartridge to improve sensitivity? How does this method compare with published SPE techniques? The PHCs in injected samples were separated by a Phenomenex (Torrance, CA) Kinetex C18 (100mm x 4.6 mm; 2.6 µm particle size) reverse-phase column. The mobile phase

titration of vinegar has a solution composed of acetic acid (HC2H3O2), water and other substances. When adding sodium hydroxide (basic solution) to acetic acid (acid) it causes a neutralization reaction. The phenolphthalein is colorless in acid, and it will change color when adding the sodium hydroxide. In this experiment, there were four trials to reach the amount of sodium hydroxide needed to reach the end point. When you reach the end point of the experiment, the solution should be pink and if the

and rinse it out with tap water. After rinsing with tap water, run distilled water into the buret a few times. Collect a ring stand and buret clamp and put the buret in the clamp. Obtain a 150 mL beaker to obtain about 100 mL of 0.0475 M sodium hydroxide. Make sure that the stopcock is closed. Use a funnel, make sure it is clean and dry, and add 5-10 mL of the NaOH solution to the buret making sure to rotate to wet the walls completely. Repeat two more times to assure the walls are well rinsed.

Have you ever wondered if all liquids evaporate at the same rate? Even though some liquids are thicker than others, they can still evaporate faster than others. In this experiment you are going to set up four jars of the same size and pour four different liquids into each of them and analyze and measure them everyday and take notes and watch how they evaporate at different rates. You will make a graph to show the decrease of the liquids. On the left side label it as ML or milliliter, amount, and

Project 1: Water Experiment It is no secret that criminals are always in search of means to effectively destroy any evidence that may implicate them in a crime, particular involving friction ridge skin as it is often speculated to be the most damning form of of evidence that exists. This is due to the undeniable uniqueness of fingerprints that remain unchanged throughout a person’s lifetime (Holder, Robinson & Laub, 2011). Over time efforts to destroy friction ridge skin evidence have included methods

The main purpose of this experiment is to decipher whether acid is friend or foe? Acid is a particular substance with chemical properties including; turning litmus red, corroding metals, and neutralizing alkalis (bases). In the late 1800s, the Swedish scientist Svante Arrhenius suggested that acids are chemical compounds that, when dissolved in water, give a solution with a hydrogen ion activity greater then water, a pH less than 7.0. A base however is any compound that, when dissolved in water

Summary: The objective of the project is to determine if I carry the allele at the TAS2R38 locus. In order to find that out, DNA was extracted from cells within the mouth. The DNA sample was quantified, amplified by PCR, ran through gel electrophoresis, purified and sequenced. The results for my DNA was not able to be determined through sequencing. The DNA samples of the class recorded that 62% of the participants were tasters (carries the allele at the TAS2R38 locus) and 38% of the participants