5. On the report sheet, you calculated your percent recovery of caffeine. a. If your percent was less than 90%, give at least one reason why it was less. b. A group of students have their percent yield more than 100%, give at least one reason why it was more than 100%. Do NOT simply say “human error.” Be specific about the types of errors (human or otherwise) that may have occurred, leading to a recovery more than eor equal to 100% (Is this possible Why?) 6. Based on what you observed during this experiment, is dichloromethane denser OR less dense than water? Explain your reasoning. 7. Based on what happened in this experiment, is caffeine more soluble in water OR more soluble in dichloromethane? Explain your reasoning.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
b. A group of students have their percent yield more than 100%, give at least one reason
why it was more than 100%. Do NOT simply say “human error.” Be specific about the types
of errors (human or otherwise) that may have occurred, leading to a recovery more than eor
equal to 100% (Is this possible Why?)
dense than water? Explain your reasoning.
7. Based on what happened in this experiment, is caffeine more soluble in water OR more
soluble in dichloromethane? Explain your reasoning.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
