# Avogadro’s Law: History and Work Problem

Learn about Amedeo Avogadro and his funky gases, Italian Revolutions, and starry-nosed moles.

# Charles’s Law: History and Work Problem

And we're back for the second installment of our gas laws series - Charles' Law. If you need to refresh on the other gas laws in this series you can check out our post on Boyles' Law, Avogadros' Law, and the Ideal Gas Law. Let's review what a gas is: a gas a is a … Continue reading Charles’s Law: History and Work Problem

# Boyle’s Law: History and Work Problem

The two variables we're looking at today are pressure and volume, whose gas relationship was discovered during the Renaissance.

Born 22 June 1939 in the Guela quarter in Jerusalem, Ada Yonath is the oldest daughter of Hillel and Esther Livshitz.  At that time, the area of Palestine was under British control. World War I left Palestine and other territories of the freshly defeated Ottoman Empire in limbo. The 1920 document issued by the League … Continue reading Profile: Ada E. Yonath

# Profile: Dorothy Crowfoot Hodgkin

Dorothy Crowfoot Hodgkin (1910 - 1994) British chemist known for mapping the structure of insulin, Vitamin B12, and other notable biochemistry molecules.

# Profile: Uma Chowdhry

Uma Chowdhry (Indian-American b. 1947): Uma Chowdhry was born in Mumbai, India, in 1947. She earned her Bachelors in physics from the Indian Institute of Science, Mumbai University before moving to the United States.  Initially seeking to study nuclear physics, Chowdhry was soon hooked on chemistry thanks to her future husband Vinay Chowdhry. After graduating … Continue reading Profile: Uma Chowdhry

# Practice Problem: Gibbs Free Energy

Given Question: The reaction given above is accompanied by the Enthalpy of the reaction (H) and the entropy (S). Determine the change in Gibbs Free energy (G) and if the reaction is spontaneous or not. If the reaction isn't spontaneous, calculate the temperature in which it will be.  Start off by listing what … Continue reading Practice Problem: Gibbs Free Energy

# Episode 5b: Combustion Reactions

Episode 5B: Combustion Reactions   This episode is on FIRE! All about combustion reactions and the information we can gain from them. Misspeak at ~5:57, should be grams hydrogen. Music: Good For You by THBD https://soundcloud.com/thbdsultan Creative Commons — Attribution 3.0 Unported— CC BY 3.0 http://creativecommons.org/licenses/b... Music provided by Audio Library https://youtu.be/-K_YSjqKgvQ Find us at … Continue reading Episode 5b: Combustion Reactions

# Lesson 5a: Theoretical, Actual, and Percent Yield.

In which we explore theoretical and actual yields! And I make a personal record of how many times I can say, "My bad" onscreen. Trouble accessing the video? Check us out on YouTube!  Questions, comments, concerns? Email us at heychemistryblog@gmail.com. Science rules!! x

# Work Problem: Calculation of Molar Mass of Unknown Base Using Titration With a Strong Acid

Given Question: A student titrates 2.0135 grams of an unknown monobase weak base to the equivalence point with 67.02 mL of .5003 M HCl(aq). What is the molar mass of the weak base?  Step 1: This is to sort out what we're given in the equation, as well as some previous knowledge. We'll use the first … Continue reading Work Problem: Calculation of Molar Mass of Unknown Base Using Titration With a Strong Acid