The answer is straightforward: phenolphthalein turns colorless in an acidic solution. When the pH of the solution is below 8.3, the indicator remains in its non-ionized form, which does not absorb ...

Abstract: With the ever-expanding development of affordable and available virtual reality headsets, there is a great opportunity for improving learning outcomes through virtual learning. Towards a ...

The short-supervised group used CPAP fewer hours per night and had lower adherence adjusted for age-specific sleep needs. Two different strategies for continuous positive airway pressure (CPAP) ...

Department of Otorhinolaryngology, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China Background: The key to treating Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS) by ...

‌The ganzfeld effect happens when you undergo sensory deprivation for some time and your brain tries to make sense of what is happening. Everyday life is full of sights and sounds. So, without sensory ...

GetEmotion is an Android mobile application used as a Haptic Touch Data Collection tool in an experiment procedure involving a emotional stimuli LIRIS-ACCEDE. The experiment procedure is part of an ...

Researcher carefully titrates an acid-base solution in a laboratory, skillfully holding a flask and controlling the drip of a burette. Precision and focus required in scientific experiments, ...

Phenolphthalein indicator in acid-base titration. Phenolphthalein indicator in acid-base titration. scientific experiment with HCl acid in Conical flask, Burette with Sodium hydroxide NaOH, pipette ...

A Whipple procedure (pancreaticoduodenectomy) may be necessary to treat cancer of the pancreas, chronic (long-term) pancreatitis, cholangiocarcinoma (a cancer in the bile duct), and more. A Whipple ...

Titration curves are powerful tools for understanding the properties of acids and bases. One of the most important characteristics of an acid or base is its pKa value, which represents the acidity or ...