How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 ml...

Catalysts are chemical substances that are usually part of chemical reactions in which they have an effect on the rates of reaction. Study the Moffat Tunnel, how catalysts work and are used in industry, and biological catalysts.

The Big Bang Theory may be a popular television show, but it also is an explanation of the origins of the universe. Explore the theory and learn about expanding and contracting universes. Understand the timeline of the universe's development and review scientists' predictions for the universe's future.

To be valid and reliable, scientific experiments must be based on data that is precise and accurate. Explore techniques for making measurements, review example measurements, and understand how to make calculations with measurements.

Discover the bromination of acetanilide and the mechanisms of this process. Investigate what bromination means, how a bromine atom is added to during bond-making and bond-breaking, and the steps involved in the process.

Have you ever wondered what interesting compounds iron can form? In this lesson we will be learning about how an iron-containing compound called ferrocene undergoes a reaction called acetylation by talking about the reaction mechanism and explaining the individual steps.

Understand what iridium is as a chemical element. Discover where iridium is found, see its properties, and explore different uses of iridium in varying fields.

Learn an organic molecule definition and see examples. Explore functional groups and their role in organic molecules, and see why organic molecules are important.

What is an ideal gas and the law relating to the pressure, volume, and temperature of the ideal gas? Learn about an ideal gas constant and its characteristics.

Compare acid-catalyzed and base-catalyzed ester hydrolysis. Understand the mechanism of ester hydrolysis with acid and base catalysts and see their products.

Balancing chemical equations is possible because of the law of conservation of matter. Understand how to balance chemical equations step by step with examples.

The standard enthalpy of formation or the standard heat of formation is used in calculations to determine changes in enthalpy. Study the energy of chemical reactions and the explanation and calculations for standard enthalpy of formation.

Learn to define and explain what stoichiometry is. Learn how to convert mass to mass in stoichiometry. Discover stoichiometry mass to mass and mole to mass problems.

Colligative properties are important to determine molar mass as related to vapor pressure, boiling point, freezing point, and osmotic pressure. Examine freezing point depression to understand the process for finding molar mass.

Explore applications of acid base extraction. Learn the definition of acid base extraction and its procedure. Discover the purpose of acid base extraction.

Distinguish if a salt is acidic or basic and the differences. Discover what acidic and basic salts are, see examples, and predict the pH of salt solutions.

Read about THF meaning, THF density, boiling point, and structure. Understand what THF is used for. Learn about the THF reaction with oxygen and its polarity.