CHEM 111: General Chemistry

Unpack the difference between quantitative and non-quantitative observations. Examples include a person's weight on the Moon and the depth a hand pump can reach. Learn why precise measurements are crucial in scientific studies.

Explore the process of heat absorption and discover how to calculate the final temperature of a lead fishing weight after absorbing a specific amount of heat.

In this video we explore the process of calculating the weight percent of barium potassium and chlorine in a mixed sample of barium chloride dihydrate and potassium chloride. Through a step-by-step approach we examine the changes in sample weight after heating to 160°C breaking down the calculations for each elemental content.

We explore the impact of increasing the concentration of ethylene glycol in an antifreeze mixture, explaining the resulting effect on the freezing point of the solution by examining its interaction with water molecules.

Learn how to compute the freezing point of water at various solution concentrations using the freezing point depression formula. Uncover the relationship between concentration and the lowered freezing points for four distinct solutions. Equip yourself with essential knowledge on the effects of solute concentration on water's freezing behavior.

Dive into the accuracy of four chemical reactions involving compounds like Barium Nitrate and Lithium Chloride. Discover which reactions yield precipitates which are correct and which need correction. A comprehensive review from Barium Sulfate formation to Lead Chloride precipitation