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Today, we will be discussing the fundamental gas laws in chemistry, focusing on how gases respond to changes in their environment, specifically in terms of pressure, temperature, and volume. Our main objective is to understand and apply the combined gas law to predict how a gas will behave when one or more of these var... | Qi17ipWr3TI | 8 5 gas laws | 584 |
Today, let's summarize the key concepts and equations related to colligative properties, which are properties of solutions that depend on the number of solute particles rather than their identity. The four main colligative properties we have discussed are vapor pressure lowering, freezing point depression, boiling poin... | fq9_usgFyaY | Colligative Properties (Summary) | 2,820 |
Welcome to Chemistry 111. As we approach our upcoming exam, it is crucial to stay focused and practice effectively to maximize your performance. Today, I will guide you through a series of practice problems that cover key concepts you are likely to encounter, emphasizing both the correct approach and time-saving strate... | eDL59FYDWv0 | CHE111 Exam 3 Practice Problems | 486 |
Today, we will discuss a sophisticated analytical instrument commonly used in chemical analysis, particularly for the identification and quantification of constituents in complex samples such as plant extracts or various products. This instrument is typically equipped with two types of detectors: the diode array detect... | mb2YDa8Ebrc | Analytical HPLC | 3,999 |
Today, we will analyze a problem involving water flow into and out of a rigid tank, focusing on determining the mass flow rates at both the inlet and outlet, as well as the time rate of change of the mass contained within the tank. The system consists of a rigid tank with water entering at state 1 (the inlet) and leavi... | Vx-T09D7x1U | Solution - Problem 2, Spring 2015, Exam 2, Thermodynamics I | 2,589 |
Welcome, scholars. Today, we will explore further examples and calculations involving limiting reactants and theoretical yields, focusing on a classic general chemistry reaction: the synthesis of potassium aluminium sulfate dodecahydrate, commonly known as alum. The overall balanced reaction for this process is as foll... | gpM8-7PSiQA | Theoretical Yield Calculations and Chemical Advancement | 3,128 |
The process of innovation and scientific discovery often begins with the simple act of observation and questioning. The first step in any creative or investigative endeavor is to come up with a unique idea. While this may initially seem daunting, it is, in fact, a straightforward process that starts by looking at the w... | APQXjxliYsY | DIY Space: How to Do a Science Fair Project - Step 1 | 742 |
Today, we will discuss covalent bonding, which is a fundamental concept in chemistry. Unlike ionic bonding, where electrons are transferred from one atom to another, covalent bonding involves the sharing of electrons between atoms. Covalent bonds typically form between two non-metal atoms, and the purpose of this shari... | Eu5a6vUIoc8 | 4 3 Covalent Bonding | 2,882 |
Good day, everyone. I am Dr. Mrs. Pretty Sunil Joshi, serving as an assistant professor at Vulcan Institute of Technology, Xalapa. In today's session, we will delve into the topic of intrinsic semiconductors, focusing on their formation, properties, current conduction mechanisms, and inherent limitations. By the end of... | azo5v2HlDr8 | Intrinsic Semiconductors | 4,165 |
Today, we will discuss the important distinction between two commonly used terms in chemistry: molarity and molality. These terms sound quite similar, and their abbreviations—M for molarity and m for molality—are easily confused, but they refer to different ways of expressing the concentration of a solution. Let us beg... | HeV9hlIazi0 | 01 Lab values and concentrations 06 Molarity vs molality | 881 |
Today, we will explore the Department of Biochemistry at Oxford University, a leading institution in the field of biochemistry and biomedical sciences. Located in the Science Area of Oxford, England, this department is one of the largest in Europe and forms a key part of the University of Oxford's Medical Sciences Divi... | DtMuSIC11nk | Department of Biochemistry, University of Oxford | Wikipedia audio article | 4,196 |
Today, we will begin our discussion of multi-component systems, focusing particularly on solutions, which are a fundamental type of mixture encountered in chemistry and materials science. A solution is defined as a homogeneous mixture of two or more substances, where one substance is uniformly dispersed at the molecula... | RG7bDGfbV_Y | Solutions (Terminology) | 33 |
Welcome to lecture number 13, where we will discuss Carbon Capture and Storage, commonly abbreviated as CCS. CCS stands for carbon dioxide capture and storage, and it is a technology aimed at mitigating the release of CO₂ into the atmosphere from large-scale fossil fuel usage. Before delving into the technical aspects ... | Z_1ZE8HoDIk | EnergyTransition-13 CCS Carbon Capture and Storage | 2,910 |
Ladies and gentlemen, it is a great honor to present the Kelly Lecture at Cambridge, focusing today on the sustainability of metals and alloys—a topic of increasing urgency as we confront the dual challenges of reducing energy consumption and greenhouse gas emissions. This work is a collaborative effort, and I will hig... | lZj3F1N0L4M | Kelly Lecture Cambridge University 2021: Sustainable Metals for a Circular Economy | 2,897 |
Good evening, and thank you for joining this lecture on phytoremediation and the role of Salicornia depressa, a salt marsh plant, as a potential tool for protecting and cleaning up salt marshes. I am Alice Palmer from UMass Boston, working in Brooke Moyers' lab in the Biology Department, where we focus on plant trait v... | ehMXyLQOKwo | Plants vs Pollution Salicornia depressa as a Potential Tool for Bioremediation | 2,857 |
Welcome to today's lecture on the data science career ladder, or more accurately, the data science career trajectory. Data science is a dynamic and loosely defined field, attracting professionals from a variety of backgrounds and offering multiple entry and exit points. The purpose of this lecture is to provide a struc... | F8i1npmBCT4 | Data Science Career Ladder - EXPLAINED! | 3,469 |
Welcome to today's lecture on chemistry laboratory safety and best practices. The chemistry lab is a unique learning environment where knowledge is gained through hands-on experimentation rather than just reading. This practical approach means you will encounter new equipment and techniques, some of which can be hazard... | 9o77QEeM-68 | Safety Video by American Chemical Society (1991) | 911 |
In today's lecture, we will discuss how to simulate a powder X-ray diffraction (XRD) pattern for a given crystal system using the VESTA software. Previously, we covered how to download crystallographic information files (CIFs) for various elements or compounds and how to navigate the VESTA interface, including understa... | KvjHlJq3TZQ | Simulate Powder XRD PATTERN using VESTA- [TUTORIAL #3] | 2,677 |
Today, we will explore the various oxidation states exhibited by the d-block elements, also known as transition elements, and compare these with the oxidation states of non-transition elements, such as those found in the p-block. One of the defining characteristics of d-block elements is their ability to exhibit a wide... | gPHJr2xijYs | Oxidation states of transition elements | The d-block elements | Chemistry | Khan Academy | 3,408 |
Today, we will discuss an innovative approach to teaching analytical chemistry, focusing on the use of the RGB additive color system as a quantitative method. This method was developed by Pedro Henrik Fonseca Velozo, Veronica de Mello Sacramento, and Vanessa de Andrade Royo, and addresses a significant challenge in und... | KoB0YtHvdXk | USE OF RGB AS A QUANTITATIVE METHOD APPLIED TO THE TEACHING OF ANALYTICAL CHEMISTRY | 3,377 |
Good day, everyone, and welcome to our session on organic synthesis, focusing on the use of spectral analysis to deduce the structure of an unknown compound. Today, rather than being given a reactant and a product and asked to determine the synthetic pathway, we are instead provided with spectral data—specifically, mas... | 73zIGOr7bew | Organic Synthesis Mechanism with Spectral Analysis | 2,753 |
Today, we will work through a multi-step organic synthesis problem involving the transformation of a primary alcohol using sodium hydride, an epoxide, and a sulfonyl chloride, followed by nucleophilic substitution. Let's begin by identifying the first intermediate. When sodium hydride (NaH) is added to a primary alcoho... | KVbx4NFsIeM | Organic Problems - Multistep Synthesis 001 | 410 |
Today, we will begin our exploration of wastewater treatment, focusing on its importance, regulatory frameworks, and the technologies that drive its processes. Wastewater treatment is essential for protecting public health and the environment by removing contaminants from water before it is discharged into natural wate... | TzA-558VAOQ | Intro to Wastewater Treatment | 4,479 |
Today, we will discuss the differences between a spectrometer and a spectrophotometer, two important instruments in the field of spectroscopy. Spectroscopy is the scientific study of the interaction between matter and electromagnetic radiation, and it involves methods for producing and analyzing spectra. The main instr... | 82a6grycQzs | Spectrometer Vs Spectrophotometer | spectroscopy | instruments | Chemistry Lecture-7 | 1,471 |
Good day, and welcome to our discussion on solutions, with a particular focus on colligative properties. Colligative properties are a fundamental concept in chemistry, referring to properties of solutions that depend not on the identity of the solute, but rather on the number of solute particles present in the solution... | xbrhR4nP4pg | Solution Colligative Properties: The Basics | 179 |
Today, we will discuss nuclear equations, which are quite straightforward once you understand the basic principles. Nuclear equations are similar to chemical equations in that they have a left-hand side, representing the state before a change, and a right-hand side, representing the state after a change. The primary pu... | CeISfgWxd60 | Nuclear Equations - Summary - GCSE Physics | 4,984 |
Today, we will explore the fascinating history and physics behind the discovery of X-rays and their diffraction by crystals, a cornerstone in the field of modern physics. The story begins in 1895 with Wilhelm Röntgen, who, while experimenting with a cathode ray tube—a glass envelope fitted with positive and negative el... | _3m2WUPX53Y | X ray diffraction by crystals | 1,427 |
In our previous discussion, we explored bond dipoles and learned how to determine where the highest concentration of electron density resides within a particular bond. However, most molecules consist of more than one bond, so it is essential to understand how to determine the region of greatest electron density in an e... | vOHSv-wqTOA | 2.1.5 molecular dipoles | 3,264 |
Today, we will explore the field of environmental chemistry, which is the scientific study of chemical and biochemical phenomena occurring in natural environments. It is important to distinguish environmental chemistry from green chemistry; while green chemistry focuses on reducing pollution at its source, environmenta... | f_VcBWSpGTY | Environmental chemistry | Wikipedia audio article | 2,617 |
Mass spectrometry is an analytical technique developed in the late 19th century that allows us to measure the mass of molecules with high precision. Despite the existence of various types of mass spectrometers, all share a fundamental sequence of steps. First, a sample containing the molecule of interest, which we will... | -po25WovnoA | Mass Spectrometry 1: Principles & Interpretation of Spectra | 4,366 |
Today, we will delve into the Krebs cycle, also known as the tricarboxylic acid (TCA) cycle or the citric acid cycle, a central metabolic pathway intricately linked to the electron transport chain, which we discussed previously. The Krebs cycle, named after Hans Krebs who elucidated its steps in the 1930s, is considere... | sqywv8P0G3g | Krebs cycle 2022 | 4,450 |
Today, we will discuss the production of rubber, a material that is ubiquitous in our daily lives. Rubber is found in a wide range of products, from slippers and surgical gloves to toys, tires, shoe soles, and even in the construction of roads. Its versatility and importance in modern life make understanding its produc... | 9-0mdd-TdSA | Production of Rubber | Substances in daily use | Middle School | Science | Khan Academy | 1,330 |
Today, we will discuss the concept of theoretical yield in chemical reactions and how to calculate it using a practical example. Theoretical yield refers to the maximum amount of product that can be formed from given quantities of reactants, assuming the reaction proceeds to completion with no losses. To illustrate thi... | 3XNnXLurags | How to Calculate Theoretical Yields | 3,537 |
Welcome to today's lecture on galvanic cells, a fundamental concept in electrochemistry. To begin, let's define what a galvanic cell is: a galvanic cell is an electrochemical device that generates electrical energy from spontaneous redox reactions occurring within it. The essential components of a galvanic cell include... | JQy1HUbkinc | 6. Electrode and electrolyte defined (HSC chemistry) | 1,566 |
Today, as our final topic in physics, I would like to introduce the concept of electrostatics in the context of proteins. To begin, let us recall the fundamental equation for the electrostatic potential energy between two point charges, which is given by \( V = \frac{1}{4\pi\epsilon_0\epsilon_r} \frac{q_1 q_2}{r} \), w... | bvcG6QQwMtw | Lecture 04, concept 20: Electrostatics inside proteins | 3,519 |
Today, we will explore the solvent properties of water in food systems, focusing on its role as the universal solvent and the implications of this for food science. Water’s ability to dissolve a wide range of substances, particularly polar molecules and ions, underpins many of its unique behaviors in foods. As food sci... | 59OJeC6bZlg | Let's Learn Food Science - Function of Water - Colligative Properties | 2,696 |
Today, we will discuss the concept of solutions and the various techniques used to separate mixtures. A solution is defined as a mixture of two or more substances that exist in the same phase. This occurs when a solute dissolves in a solvent, resulting in a homogeneous mixture where the composition is uniform throughou... | XC1RxloV0Mo | How To Separate Solutions, Mixtures & Emulsions | Chemical Tests | Chemistry | FuseSchool | 1,412 |
Today, we will be discussing proteins, which are the most structurally and functionally diverse group of macromolecules in biology. Proteins perform a wide array of functions essential to life. First, all enzymes are proteins. Enzymes act as biological catalysts, speeding up chemical reactions in the body, such as DNA ... | 5fGsWYyNwFo | Proteins | 877 |
Welcome to today's lecture on multi-resolution modeling of biological systems in LAMMPS, focusing on recent developments and implementations that enhance the simulation of complex biomolecular systems. This session is divided into two main parts: the first covers the integration of the ELBA coarse-grained force field i... | ieJBO29mI04 | ARCHER Webinar: Mulit-resolution modelling of biological systems in LAMMPS | 279 |
Welcome to the MDAnalysis Online Workshop, where we will cover the fundamentals of using MDAnalysis for the analysis of molecular dynamics (MD) simulations. MDAnalysis is a Python library designed to facilitate the reading, manipulation, and analysis of molecular simulation data, supporting a wide range of file formats... | njzoNzOwR78 | Intro to MDAnalysis Workshop | 1,699 |
Welcome to today's lecture on advanced characterization techniques, focusing specifically on X-ray Absorption Spectroscopy (XAS), which encompasses Extended X-ray Absorption Fine Structure (EXAFS), Surface Extended X-ray Absorption Fine Structure (SEXAFS), and X-ray Absorption Near Edge Structure (XANES or XANES). In p... | bJA9y2NdR70 | Mod-01 Lec-31 | 2,986 |
Welcome to the fascinating world of chemistry. Today, we will explore the principles behind drawing with light using the cyanotype process, as demonstrated in the Mel Chemistry set. This experiment allows us to create images on paper through a series of chemical reactions that are sensitive to light. Before we begin, i... | MnsZnJONpsM | "Painting with light" experiment from the "Cyanotype" set | 4,697 |
Welcome to our ongoing series in Physical Chemistry 2. Today, we begin a chapter with significant practical applications in both chemistry and biology: spectroscopy. Spectroscopy is the study of the interactions between matter and light, and it is a powerful tool for identifying molecules and understanding chemical pro... | IFmgRXjJv98 | Physical Chemistry 2, Part 9: Spectroscopy and the Interaction of Light with Matter | 4,703 |
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